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backfire

verb [I] (BAD RESULT)
 
 
/ˌbækˈfaɪər/ US  /-ˈfaɪr/

Definition

(of a plan) to have the opposite result from the one you intended: Her plans to make him jealous backfired on her when he went off with her best friend.Failing and doing badly
(Definition of backfire verb (BAD RESULT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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