HomeServicesBlogDictionariesContactSpanish Course
Home › Dictionary › English › be on one
← Back to search

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 all C1 English words →

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

Learn this word in context

See be on one used in real conversations inside our free language course.

Start Free Course

Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free