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no cap

phraseInformal

A American English slang term. Browse all American slang.

What it means

  1. No lie; I'm serious. Appended to a statement to vouch for it.

  2. Capping, on its own, means lying: 'you're capping'.

In use

  • That's the best pizza in the city, no cap.

  • He's capping, he wasn't even there.

Where it comes from

From AAVE, where 'to cap' has meant to boast or exaggerate since at least the mid-20th century. The cap emoji did a great deal to spread the current form.