Avoid using this abbreviation in business or professional settings because it is so casual. Also, Check What Does SNM Mean In Texting? What Does ISTG Mean and How Is It Used in Real Context? The use of shortened phrases is a popular way to communicate in text messages and online conversations. 1 definitions of ISTG. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). You can use it to show your deep frustration, attest to the truth of something, or underline your beliefs. suggest new definition. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. " People use it in various places on the internet to tell someone to stop talking or as a gut reaction to something offensive or mean-spirited. In summary, ISTG is an acronym widely used in informal online communication. Use Cases & Examples. It's not typically used in a religious context. The phrase “so what” is often used to express indifference or dismissiveness about the topic at hand. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. ” Origin of ISTG. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. What does STG mean?U Jelly is often used to goad someone online or in-person because you possess an article that they do not have, or because you have attained some kind of gamer achievement or minor online fame. It is an acronym used to emphasize a belief in or commitment to the truth of a statement. Today, I'll walk you through what ISTG means in text. Get all the news you need in your inbox each morning. A. HMU meaning: hit me up. It is used to express frustration, anger, or disbelief. On the internet, there’s a lot of jargon and abbreviations that often confuse even the most seasoned internet user. This expression is most likely something you've heard in ordinary conversation. What does ISTG mean? ISTG means “I Swear To God”. For example, they might say “ISTG this homework sucks. There needs to be a TikTok user manual that includes a glossary because new abbreviations and slang words are constantly being churned out and I, a millennial, cannot keep up. ETA meaning: estimated time of arrival. ISTG. What does LFG ð mean? LFG as “let’s freaking go” has since become widespread in texts among friends as a way to excite or “hype up” one another about a particular event or situation. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness. One of the known acronyms is “ISTG” or “istg”. Origin of ISTG. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious. TLDR meaning: too long; didn't read. "I swear to. " “ISTG” meaning over text message. It may sound like a new term to some, but this one is very familiar to social media users. This acronym often highlights the sincerity, seriousness, or exasperation of the person using it. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. Expand Your Lexicon: Discover 5+ Similar Words for ISTFG When it comes to texting, understanding similar. Confused about slang like cap, HB, ATP, and more? We defined some popular TikTok acronyms for you. Let’s talk about the other meanings of this common abbreviation and find out what it means for different people in different contexts. It comes from the courtroom oath that traditionally said, “i swear by almighty god that the evidence i shall give shall be the truth, the whole truth, and nothing but the truth. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. It’s a widely used acronym in text messaging and online chatting on social networking sites. This should not be used in any formal setting, no matter how informal it may seem, via social media or text. ISTG Meaning= Expression of Disbelief4. ”. The phrase originated as a method for people to express a greater level of certainty about a statement they’re making in a conversation. FYP means For You Page. ISTG is an abbreviation commonly used in text messaging and online communication, particularly among younger generations. Meaning. It is often used in informal conversations, especially when expressing frustration or disbelief. . Capitalization The slang term and abbreviation “ISTG” is typically spelled in ALL CAPS or all lowercase letters. ISTG meaning is “I Swear To God” and is one of the most widely used acronyms in the English language. ILYSM can be used to express profound affection. Definition of ISTG in Slang/Internet Slang. This is also very similar to. It is commonly. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. ISTG Meaning= ThreatUse Cases & Examples. What does Istg mean in text message . But while the slang term ISTG is harmless, other teenage slang terms could indicate that your teen is talking about risky behaviors or communicating with potentially dangerous people. It’s used to convey a deep sense of seriousness about a situation or to emphasize a point being made. Specifically, as internet usage is increasing daily, people. Promise. ISTJ types like to have clear goals and realistic deadlines, and to work with factual data to solve problems and monitor progress. The origin of ‘ISTG’ can be traced back to the phrase “I swear to God,” which. '. ISTG=Make a PromiseWhat Is ISTG Meaning in SlangIstg Slang Usage (Examples and Use Cases)ISTG Meaning on TikTokISTG Meaning SnapchatFAQs on ISTG Meaning1. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on social media. ISTFG. ” How to understand Texting Abbreviations!! LOL and LMAO, SMH, FFS… and all the other ISTG Meaning A short video summarzing the most common. In a different context, “sw” can also mean “someone who. Correct: ISTG Correct: istg Incorrect: iSTG Usage Use of the abbreviation can be found in the following places. ISTFG means “I Swear To Fing God” and is typically used in informal texting to express frustration or disbelief. Sub the Gamer security threat group. It is typically used to show appreciation of an act of kindness by a loved one. LFG meaning: let's freaking go. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. The texting term ISTG, which means "I Swear To God," tells people that you really do mean what you're saying. This initialism should be avoided in professional situations or in conversing with someone who is religious. Looking for online definition of ISTG or what ISTG stands for? ISTG is listed in the World's most authoritative dictionary of abbreviations and acronyms ISTG - What does ISTG stand for?Definition of the term. I swear to f**king god (ISTFG) is an abbreviation used to express exasperation, disbelief, or agreement. Alternatively, you might say ISTG to show exasperation or frustration at something someone is telling you. It’s often used as an exclamation or a way to emphasize something and can be written in lower or upper case letters. More violent then just I Swear To God Learn what ISTG means in this quick and easy guide! Find out what the abbreviation stands for and how to use it in real life with this simple explanation. As in, I swear that actually happened. IYKYK meaning: if you know, you know. This phrase can be used to swear truthfully without having to use a more serious swear word, such as the word "God". ”. 2. It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. I Swear to God. This phrase should only be used in casual conversation. One such popular slang on platforms like Snapchat is ‘ISTG’. Read Also: What does CFS mean on Instagram? Common Uses for ISTG . ISTG is used to express frustration or annoyance at something or to show emphasis on a statement. This is a common acronym that is used online, typically in text-based communication. Start the day smarter. In contrast to standard text or audio messaging apps, Snapchat offers the unique ability to share fleeting live video messages that vanish as soon as they are. For example, three sample text messages using the abbreviation ISTFG could be: 1. While it may seem like a phrase that you would use in casual conversation, it can be so much more than that. ISTFG. Social media platforms: Snapchat, Instagram, Twitter, TikTok, and more. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages,. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. ISTG can be used in various contexts and can have different implications depending on the conversation. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on. Testify. The ISTG acronym is commonly used in response to a person who doubts something that you said. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. You will find information about the origin and other possible meanings in all types of information on this acronym, including its. Some of these words and acronyms are used on other video games and social media platforms too. ”. In summary, ISTG is an acronym widely used in informal online communication. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. This abbreviation is typically used to express surprise, confusion, disbelief, or. In simple terms, “istg” stands for “I swear to God,” a popular expression used to emphasize the truthfulness or intensity of a statement. Whenever a TikTok user opens their app, they are directed to their For You Page, which is a stream of videos that TikTok thinks that user will like. "I swear to. It’s similar to the term ‘ONG. ISTG is an acronym that means I swear to God. What does GM mean in text from a guy?What does df mean in texting? In the realm of texting and digital messaging, “df” usually stands for “da fuq”, a slang and casual form of saying “the fuck”. This is also very similar to. When someone uses ISTG, they are essentially emphasizing. ISTFG. They are there for each other on the good days and the bad days. ISTG Meaning= Threat Use Cases & Examples. When used in text conversations, ISTG retains its original meaning of “I swear to God. What Does ISTG Mean In Texting? ISTG is an acronym used for “I Swear To God. ISTG is simply an acronym that means I swear to God. ”. Start the day smarter. ISTG Unveiled: Introduction to the Slang. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text. This initialism should be avoided in professional situations or in conversing with someone who is religious. What Does Istg Mean? The acronym ISTG stands for “I swear to God. ONB is an abbreviation commonly used in texting, which stands for “Oh No Baby”. Here's what "ISTG" means and how you can use it in your next text exchange. ISTG stands for “I swear to God. I’m beyond shocked. How Is ISTG Used? Use Cases & Examples. So, the next time you see someone using “istg” in a message or post, you’ll know exactly what they mean. OFC meaning: of course. Like, "ISTG, if I get one more. ”. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. TikTok lingo is hard to keep up with. 1 definitions of ISTG. 2006)Texting with friends is the best way to use this term. ISTG is an acronym that stands for “I Swear To God”. Simply put,. What does ISTG mean in the text? Ans. "I swear to. The acronym ISTG is commonly used in text. ISTG has multiple definitions that can be used in various settings. ”. Prison gang. "Meaning; ISTG: I Swear to God: ISTG: Immigrant Ships Transcribers Guild: ISTG: Information Storage Technology Group (University of Twente; Netherlands) ISTG: Inter-Site Topology Generator: ISTG: Implicit State Transition Graph: ISTG: Integrated Systems Tech Group (Tampa, FL) ISTG: Innovative Science and Technology Group (est. I Swear to God. One of the main uses of ISTG is in text messages or chats, either between friends or in a. You might learn your child is using this slang term by chance when a text pops up on the phone screen. "I swear to. ISTG is a slang abbreviation used in online messaging and texting that means 'I swear to God. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious context. ISTG stands for “I swear to God” in texts and on social media apps. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. It’s an acronym that people use to express the seriousness of a situation or to emphasize that they are not joking. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. What Does ISTG Mean? Introduction. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. It can be a powerful tool for self-motivation and encouragement. Similar to “I Swear To Fucking God” istfg, in that it is an escalation of the original term “I Swear To God” istg. It's used express emotional sincerity or to seem intimidating. It is commonly used as an exclamation or interjection. ”. ISTG Meaning= Honesty or Certainty2. This initialism should be avoided in professional situations or in conversing with someone who is religious. It can also be used as an expression of sincerity, such as when a user is making a promise or expressing their. What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. IMO meaning: in my opinion. Today, I'll walk you through what ISTG means in text and other text. ” This abbreviation is commonly used in informal conversations on various digital. Gunna explained that the ‘P’ stands for ‘player,’ although it can also stand for. ”. ISTG. It’s also like STG. new search. It is a commonly used slang expression used to emphasize that someone is telling the truth, or to add emphasis to a statement. Usually, students or the young generation use this acronym. STG means different things to different people but its most common meaning is ‘Swear To God’. ISTG is an acronym that is short for “I swear to God”. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. ISTG and OMG can also be used interchangeably often. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. " It is an internet acronym used in online chat to express frustration, surprise, or vehement assertion. suggest new definition. This phrase is often used on social media while making public posts or in private chats. When someone doubts something you said, using ISTG is a way to make a solemn oath that most people respect and are more likely to believe. Istfg Meaning Is: Istfg stands for “I Swear to Fucking God. What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. This. The expression “I swear to God” is used for centuries and originates directly from the Old English word “swear” which means swearing. It’s also like STG. By swearing to God, you make a sacred oath that most people respect more and therefore, are more. The term is primarily used to emphasize a point you’re making and can reiterate anger or annoyance. What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. STG: You can swear to god when you are frustrated or in exacerbation. Here's what this versatile slang term means and how you can use it in your messages and social media posts. " The abbreviation ILYSM is used with the meaning "I Love You So Much" as an expression of affection. The abbreviation “ISTG” is a shorthand. FOMO meaning: the fear of missing out. ”. ABC means asking another player (or telling another player you’re ready) to make an offer, trade or perform a task in Roblox, such as roleplaying in a game. HMU meaning: hit. In texting lingo, “istg” simply stands for “I Swear To God”. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages, social media posts, and online forums. It is a stronger version of the phrase “I swear”. ISTFG means “I Swear To Fing God,” a phrase used to emphasize sincerity or seriousness when making a statement. Guarantee. ”. . Pushin P is a popular phrase in the Bay Area and Texas that was popularized by Atlanta rapper Gunna. It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. ISTFG, if you don’t stop playing your music so loudly, I’m going to lose it. ISTG is an internet slang initialism that conveys earnestness, annoyance, or surprise. ISTG stands for "I Swear to God. It stands for “I swear to God. Throughout the years, a variety of terms have arisen which make it easier to communicate online. ISTG Meaning. The ISTG definition includes a short acronym for a phrase that reads as ‘I Swear To God’. It could be used to show how excited they are or to express. OFC meaning: of course. Since this is a very casual acronym, avoid using it in. It can be used to express emotions, surprise, or sudden kind of feelings. You’ll find it all over the internet, from social media platforms like twitter and instagram to direct messages between friends. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. ILYSM means "I Love You So Much. Use Cases & Examples. “ISTG” stands for “I swear to God,” and it’s commonly used in texting to express the seriousness of a situation or to assure someone that you’re not joking when. For example, if someone decides to message you with insulting comments about your hair, then you might reply with "STFU. Essentially, ISTG is a shortcut way of saying "I. new search. Key Takeaways: ‘ISTG’ stands for “I Swear To God” and is commonly used in text messages and online chat. Having a parental control app on your child’s phone will give you. ISTG is commonly used in text messages and other social media conversations as a way to emphasize the truth or sincerity of a statement. ETA meaning: estimated time of arrival. Swear to fucking god. ” Origin of ISTG. ISTG Meaning= Threat3. ISTG is simply an acronym that means I swear to God. I swear to God. It is an expression used to emphasize the truthfulness or sincerity of a statement. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. Chronic Obstructive Pulmonary Disease D. What does B) mean? Back when emojis weren’t a thing, ‘emoticons’ were used to add more emotions to the text. IYKYK meaning: if you know, you know. ISTFG, I can’t believe she actually said that to me. This phrase is typically employed to express surprise, disbelief or concern over a given situation. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. ISTG Meaning. The term comes from “shipping” within fandom culture. If you see someone using ISTG when texting, they’re probably emphasizing how serious they are about something. ISTG is an acronym used for “I Swear To God. ABC – This doesn’t stand for anything. ” Kids often use this to express frustration or exasperation. Here’s our round-up of the latest Roblox slang. Usually, students or the young generation use this acronym. ISTG Meaning What Does “ISTG” Stand For? If you’ve ever seen “ISTG” in a text message or on social media, you might be wondering what it means. ISTG is an acronym used in texting, which stands for “I swear to God. It can be used as an exclamation, where users are expressing disbelief or shock. For example: What does ISTG mean? ISTG is an acronym that means I swear to God. ISTG means I swear to God. This is a group of teachers that are more than friends. They prefer to work in traditional organisational environments, with people who take their. This phrase is often used to express frustration or exasperation with a situation or to emphasize the sincerity of a statement. Do you know what ISTG means in a text message? Watch this video to find out when to use ISTG in a text message and what it means!What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. It's a close relative of the OMG (Oh My God). Clear Of Patient Diagnosis B. ” Definition: Istfg is an acronym for “I swear to f Up. ISTG stands for I Swear To God. It represents an empathetic or mildly shocked response to unexpected news or events. It can often. Specifically, as internet usage is increasing daily,. Well, fret not – I’m here to help unravel the mystery for you. TLDR meaning: too long; didn't read. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. It is commonly used in text messaging to express the seriousness of a situation or to assure that a statement is not a joke. The Meaning of ISTG in Text. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. What does ISTFG mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: ISTFG. STFG stands for Super Teacher Friends Group. Here’s what this multifaceted slang term means and how you may. What Does ISTG Mean In Texting? Snapchat represents a real-time multimedia communication platform that takes a step beyond traditional messaging applications. Abbreviation of I Swear To Mother Fucking God. What does OTP mean in texting? “OTP” means “one true pair/pairing,” according to Merriam-Webster. ”. Jamie Grill / Getty. A very dramatic phrase to be used only in exceptional circumstances. It could be used to define the frustration or annoyance you might have towards something or somebody. It can be written in both lowercase “istg” and capital “ISTG” letters. Person1: I'm so exhausted. Every TikTok user's FYP. ’. Usage: “Oh nice, you finally finished it! Welcome to the club B)” What does BB mean?What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. I swear to fucking god. Going deeper into its meaning, ISTG sounds quite similar to OMG ‘Oh My God!’. This phrase is used to emphasize the truth of a statement or assertion. GTFO can be used to express disbelief or displeasure. Complaint Of Patient Data C. It can be used to convey sincerity, make promises, express annoyance, and more. ” It is commonly used in text messaging and online chat to emphasize the truth or sincerity of a statement. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. ISTG stands for: I Swear To God. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. Meaning. ”. STFU is an acronym that means "shut the fuck up. ISTG stands for “I swear to God” and is often used on Snapchat to emphasize a point or express strong emotion. Even though the phrase includes “God,” its meaning and uses aren’t considered religious. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. B) used to be the symbol of a person wearing sunglasses with a smile on his face. " ISTG is used to add emphasis to a statement (usually a promise, threat, excuse or apology), or as an interjection which expresses surprise, skepticism or exasperation (similar to OMG ("Oh My God!") ). Simply put, “ISTG” stands for “ I swear to God . It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. Chronic Osteomyelitis Pathology Degree Embed Share an image of ISTFG » Click to view: Hearing impaired tip:. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. What does istg mean in text. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. ATP meaning: answer the phone. This initialism should be avoided in professional situations or in conversing with someone who is religious. Page ContentsWhat Is ISTG Meaning1. This is a casual phrase that many people use both online and in real life (imagine someone exclaiming “I swear to God!” when they’re frustrated or emphasizing a point). It can be used to express emotions, surprise, or sudden kind of feelings. The phrase was later. It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. This can be seen in phrases like: “ISTG, I’m always here for you” or “ISTG, I’ll never forget what you did for me”. It is commonly employed in informal chats, videos, and posts to show seriousness and truthfulness. It can also be an expression of surprise or. – What does istg Mean in Text – ISTG is a popular online abbreviation among today’s youth. I just won the jackpot on the lottery ticket I bought yesterday, ISTFG! 5. ISTG is short for "I swear to God. Get all the news you need in your inbox each morning. ISTG can be used to express extreme seriousness, anger, or surprise, and is usually used outside of serious religious contexts. Pinky promise. ” It is often used to emphasise the truthfulness of a statement or convey the seriousness of a situation. In conclusion, “ISTG” is an acronym that stands for “I swear to God. "I swear to God" isn't just texting slang – it's used in everyday conversations to emphasize the truth at hand. More violent then just I Swear To GodISTG is an acronym that is short for “I swear to God”. However, as with many other abbreviations meaning "I love you," it should not. This is only for close friends. Definition of ISTG in Slang/Internet Slang. Annoyance and Assurance Another ISTG How to Use ISTG One of the hottest internet acronyms among today's teenagers is ISTG. U Jelly has become a very popular expression, and because of its viral spreading nature, it has achieved meme status. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. “I swear to God” is a common phrase that people use to show that they are telling the truth or to express their sincerity. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. 4. It is a reference to swearing or commitment to God that is not something to take lightly as it is a risk that the person who is saying it could be punished in the event of lying. The “baby” part of the phrase isn’t a literal reference to a child, and. 查看翻译. Overall, the acronym STG stands for “swear to God. This phrase has a couple of variants, S2G and ISTG, and is frequently used in texting or on social media. ISTFG. I swear to fucking god. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). This expression is used to emphasize the truthfulness or seriousness of a statement. It’s a direct and sometimes blunt way of communicating that the information just shared doesn’t impress, affect, or matter to the person asking “so what. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. What Does ISTG Mean? ISTG is an acronym that stands for “I Swear to God”. 2. 3. The media could not be loaded, either because the server or network failed or because the format is not supported. By using “ISTG,” individuals can emphasize the sincerity or truthfulness of their statements, especially when sharing surprising facts or. What Does Istg Mean In Text? I swear to God ISTG means “I swear to God. ISTG Meaning. ISTG is an acronym that stands for ‘I Swear To God. OTP meaning: one true pairing (a couple that fans prefer to all other. " ISTG is used to add emphasis to a statement (usually a promise, threat,. ”. Usually used after saying something ‘cool’. ISTG is often used in informal conversations, texting, and on social media platforms. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text.