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Meaning of be on one | Babel Free

Verb CEFR C1

Definitions

Behave in an irrational, aggressive, or eccentric manner.

slang

Examples

“Janine: Oh, see you, Gregory. Goodbye, Mr. Johnson. You know what? I'm just realizing I don't know your first name. Mr. Johnson: When you get home tonight, look up in the sky. It's written in the stars. Gregory: He on one today.”

CEFR level

C1

Advanced
This word is part of the CEFR C1 vocabulary — advanced level.

See also

be on one's beanwater be on one's bullshit be on one's merry way be on someone's dick be on someone's nuts be on the lookout