Borrowed from narrative storytelling, an adult arc is the phase in someone's life where they visibly grow into maturity — getting their finances straight, leaving toxic situations, developing routines, and generally becoming a more functional human. Unlike a full character arc in fiction, an adult arc is ongoing and messy, and people usually announce they're in one while they're still figuring it out. It implies growth is happening even if it's not linear, and online it's often used to celebrate or document the transition from chaos to something resembling stability.
He quit the dead-end job, started therapy, and cooked his own meals three nights a week — deep in his adult arc.
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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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