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English definition of “failure”

failure

noun [U + to infinitive] (NOT DO)    /ˈfeɪ.ljər/ US  /-ljɚ/
B2 the fact of not doing something that you must do or are expected to do: His failure to return her phone call told her that something was wrong. Failure to keep the chemical at the right temperature could lead to an explosion.FailuresAccidents and disastersHigher and lower points of achievement
(Definition of failure noun (NOT DO) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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