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Meaning of keep an eye open | Babel Free

Verb CEFR C2

Definitions

To remain vigilant for someone or something.
idiomatic
To remain vigilant for a possibly dangerous situation.
idiomatic

CEFR level

C2

Mastery
This word is part of the CEFR C2 vocabulary — mastery level.

See also

keep an eye out keep an eye peeled keep around keep at keep at arm's length keep away