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Meaning of all clear | Babel Free

Noun CEFR B2

Definitions

a signal that danger, such as an air raid, is over; usually a siren at a single pitch
countable, uncountable
permission to proceed after obstacles have been removed
countable, uncountable

CEFR level

B2

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

See also

all comers all day all dressed all duck or no dinner all ears all expenses paid