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English definition of “fire sth off”

fire sth off

informal phrasal verb with fire     /faɪər/ verb [T] (UK also sack)
COMMUNICATIONS to quickly write and send a message , letter , etc.: He can fire off an email with a question and usually get an answer within a few hours . She fired off an angry letter to staff warning them not to " bad-mouth " colleagues .
(Definition of fire sth off from the Cambridge Business English Dictionary © Cambridge University Press)
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