Probably. A phonetic spelling that mimics how the word is said in casual American speech. Slightly more playful than "prob" and almost never appears in formal writing.
prolly going to bed early tonight, work tomorrow is gonna suck
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Viral internet speak — memes, ratios, main-character moments, and the algospeak of every platform from Twitter to Reddit to TikTok comment sections.
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Really. A phonetic shortening used in casual chat, similar to "rlly" or "really really". Often doubled or tripled for emphasis ("rly rly rly need to leave"). More common in DMs and group chats than in posts.