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English definition of “failure”

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failure

noun uk   /ˈfeɪ.ljər/ us    /-ljɚ/

failure noun (NO SUCCESS)

B2 [C or U] the fact of someone or something not succeeding: The meeting was a complete/total failure. I'm a bit of a failure at making (= I cannot make) cakes. I feel such a failure (= so unsuccessful). Their attempt to climb Everest ended in failure. The whole project was doomed to failure right from the start (= it could never have succeeded).
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failure noun (NOT DO)

B2 [U + to infinitive] the fact of not doing something that you must do or are expected to do: His failure to return her phone call made her realize that something was wrong. Failure to keep the chemical at the right temperature could lead to an explosion.
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failure noun (STOP)

B2 [C or U] the fact of something not working, or stopping working as well as it should: He died of heart/liver failure. The accident was caused by the failure of the reactor's cooling system. The number of business failures rose steeply last year. After three crop failures in a row, the people face starvation.
(Definition of failure from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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