Meaning of be not to know | Babel Free
Definitions
-
To not have the required information. UK, especially
- Used other than figuratively or idiomatically: see be, not, to, know.
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.
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