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chub up

Informal slang meaning to gain weight or become noticeably chubbier, often used in a self-deprecating or lighthearted way.

ˈt͡ʃʌb ˈʌpHistorical138 viewsLast reviewed Jun 29, 2026+ Add a definition
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#1·Apr 28, 2026Global

Informal slang meaning to gain weight or become noticeably chubbier, often used in a self-deprecating or lighthearted way. To chub up is to fill out — whether from comfort eating, a sedentary period, or just getting older. The phrase lacks serious malice and is more often used in a resigned or jokey tone than as a genuine insult, particularly when people reflect on changes to their own body.

He definitely chubbed up over winter, but honestly so did everyone after all those holiday dinners.
Origin: Editorial expansion authored on Slangora (model-assisted, hedged).
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#2·Apr 26, 2026Global

(slang) To become chubby; to grow fat.

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  • “I have just worked hard to chub up as fast as I can with the least amount of energy and I have, like, found the place that I'm going to hibernate.”

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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.

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