19 "Most-Used" Reddit Slang Terms [DEFINED & EXPLAINED]

If you browse Reddit even occasionally, you'll quickly notice the platform has a language all its own. Jargon, abbreviations, and inside jokes are everywhere, and they can be confusing if you're not a regular. To help you decode the conversation, here's a practical guide to 19 of the most-used Reddit slang terms. Know these, and you'll understand most threads without missing a beat.

Essential Reddit Vocabulary: The Basics

Reddit users (or 'Redditors') rely on a handful of core terms that pop up in almost every popular thread. These are the building blocks of Reddit-speak that you'll see across all subreddits.

• OP: Short for 'Original Poster.' This refers to the person who started a thread or posted a question. You'll see replies like, 'OP is right,' or, 'Thanks, OP!'
• AMA: 'Ask Me Anything.' This tag signals that the poster is open to questions, often used in celebrity or expert Q&A sessions. Example: 'I'm a NASA engineer, AMA.'
• TL;DR: 'Too Long; Didn't Read.' Used to sum up a long post or provide a quick summary. Example: 'TL;DR: The cat was in the box the whole time.'
• NSFW: 'Not Safe For Work.' Indicates content that may be inappropriate to view at work or in public. Often used for explicit images, videos, or stories.

These terms help structure conversations and set expectations for what follows in a post or comment.

Karma, Flair, and Other Reddit Mechanics

Reddit isn't just about chatting; it has its own system of reputation and personalization. Understanding these terms helps you navigate both the culture and the platform's technical features.

• Karma: A points system. You earn karma when people upvote your posts or comments, and lose it when they downvote. High karma is a badge of reputation, but doesn't unlock extra features.
• Flair: A tag or icon that appears next to your username or post title. Some subreddits let you choose your own flair, like 'Expert' or 'Long Time Lurker,' while others require mod approval.
• Mod: Short for 'moderator.' These are volunteer users who enforce subreddit rules, remove posts, and ban users if needed.

While karma and flair are mostly for fun and community standing, knowing who the mods are can help if you need to report spam or abuse.

Popular Abbreviations and Their Meanings

Reddit loves abbreviations that keep discussions snappy and inside jokes alive. Some have roots in internet culture, while others are Reddit originals.

• TIL: 'Today I Learned.' Used when someone shares an interesting fact they just discovered. For example: 'TIL octopuses have three hearts.'
• ELI5: 'Explain Like I'm 5.' A request for a simple, jargon-free explanation, as if talking to a five-year-old.
• IAmA: Stands for 'I am a...'. Usually paired with AMA, as in 'IAmA firefighter, AMA.'
• CMV: 'Change My View.' Used in debates or discussions where someone wants their opinion challenged or is open to new perspectives.

These are especially common in post titles and help signal what kind of discussion or information to expect.

Reddit Reaction Terms and Voting Slang

Much of Reddit's charm comes from its quick, witty responses and the ways users show approval or disapproval. These slang terms are shorthand for reactions and votes.

• Upvote / Downvote: Clicking the up or down arrow on a post or comment to signal approval or disagreement. High upvotes push content to the top; many downvotes bury it.
• FTFY: 'Fixed That For You.' Usually a humorous or sarcastic correction to someone else's comment or statement.
• Bump: Posted to move a thread back to the top of the subreddit, usually when someone wants more visibility for a question or sale.
• MIC DROP: Used when someone feels their comment is unarguable or ends a debate. Sometimes accompanied by a witty response or meme.

You'll see these in fast-moving threads, especially where quick wit and meme culture thrive.

Reddit Community and Relationship Lingo

Many subreddits focus on relationships, support, or community advice. These subcultures have developed their own shorthand for common situations or roles.

• Lurker: Someone who reads posts and comments but rarely or never contributes themselves. Many users identify as lurkers before making their first post.
• Throwaway: An account created just for a specific post, usually to protect privacy when discussing sensitive issues. Example: 'Posting from a throwaway because my friends are on Reddit.'
• SO: 'Significant Other.' Used when discussing partners, especially in relationship advice threads.

This lingo helps people share personal stories without revealing too much, and keeps discussions inclusive and supportive.

Storytelling and Drama Terms

Reddit is famous for its wild stories and viral drama. Several slang terms have emerged to describe the twists and outcomes of these posts.

• AITA: 'Am I The Asshole?' The title format for a popular subreddit where users ask if they were in the wrong in a specific situation.
• ESH: 'Everyone Sucks Here.' A verdict in AITA threads, used when all parties are at fault.
• Update: Sometimes posted by OPs to provide follow-up details after a story gets attention. Example: 'UPDATE: He finally apologized.'

Following these threads, knowing the verdicts and update cues helps you keep up with the drama as it unfolds.

Memes, Meta, and In-Jokes

At times, Reddit language is just about the fun of being in on the joke. Some terms have become memes or meta-commentary that bind the community together.

• First! Users post this to claim they were the first to comment on a thread, usually for bragging rights or as a joke.
• Bold of you to assume: A sarcastic response to an incorrect or presumptuous comment, often repeated in meme format.
• Wholesome: Used to describe content that is heartwarming, supportive, or purely positive. Whole subreddits are dedicated to 'wholesome' stories or pictures.

Recognizing these memes helps you understand why some threads take the turns they do and why inside jokes get upvoted to the top.

Frequently asked questions