Meaning of under lock and key | Babel Free
Definitions
-
Imprisoned with little or no chance of escape; locked up. UK, US, idiomatic
-
Safely guarded; locked away. UK, US, idiomatic
Equivalents
Examples
“If it was him we can have him under lock and key in 24 hours.”
“It is the policy of the organization to keep unused check supplies safeguarded under lock and key.”
CEFR level
C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
This word is part of the CEFR C2 vocabulary — mastery level.