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Meaning of on acid | Babel Free

Noun CEFR B2

Definitions

Exaggerated, bizarre or unpredictable.
idiomatic, informal
Used other than figuratively or idiomatically: see on, acid.

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

on air on alert on all counts on all fours on all hands on all-fours