AF
Internet slang initialism standing for 'as fuck', used as an intensifier attached to adjectives or other descriptors to mean 'extremely' or 'to the greatest possible degree'.
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Born ~2010 · no dated citations yetDefinitions
Internet slang initialism standing for 'as fuck', used as an intensifier attached to adjectives or other descriptors to mean 'extremely' or 'to the greatest possible degree'. Typically written in lowercase (af) in informal digital communication. Versatile and high-frequency across social media platforms, texting, and online communities. The phrasing is direct and emphatic: 'tired af', 'cute af', 'hungry af'. The vulgarity is mild enough that it's widely used even in semi-public contexts, and the lowercase form softens the explicit origin.
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Internet slang abbreviation for as fuck, used as an intensifier appended to adjectives — tired af, hungry af, done af. Extremely common across social media, texting, and casual online writing. Amplifies the preceding adjective to its maximum register. The abbreviation allows the emphasis without spelling out the full expletive, making it versatile across different audiences and platforms. The usage spread from social media platforms and firmly embedded itself in spoken conversation, particularly among younger demographics.
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, also af, a/f.
"AF" means , also af, a/f. It is one of many casual words teens pick up from friends, social media, music or sport, and on its own it carries no particular warning. If you hear your teen use it, it is fair to ask what they mean by it in their friend group, since meanings drift quickly. Asking out of curiosity rather than alarm tends to keep the conversation open and useful.
"AF" is informal English meaning , also af, a/f. It is used widely across English varieties. A more formal or neutral equivalent would be something like "" expressed in standard vocabulary. A common mistake is to assume "AF" can replace its standard equivalent in every register; keep it for spoken or casual situations and use the formal form in writing. If you are a B2 or C1 learner, it is useful to recognise this word when you hear or read it, but think carefully about whether the situation really calls for it before using it yourself.
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Has two distinct uses: its literal sense refers to the active partner in anal sex, and its insult sense labels someone as thoroughly despicable or contemptible. The insult sense is far more common in everyday profanity and follows the same pattern as similar compound insults. Both uses are highly vulgar. Primarily found in heated arguments, crude humor, or explicit content rather than polite conversation.
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(chiefly, Internet slang) As far as I'm concerned; as far as I care.
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(Internet slang, initialism) As far as I understand.