Definition of "fail" [fail]

  • (verb-intransitive) To prove deficient or lacking; perform ineffectively or inadequately: failed to fulfill their promises; failed in their attempt to reach the summit.
  • (verb-intransitive) To be unsuccessful: an experiment that failed.
  • (verb-intransitive) To receive an academic grade below the acceptable minimum.
  • (verb-intransitive) To prove insufficient in quantity or duration; give out: The water supply failed during the drought.
  • (verb-intransitive) To decline, as in strength or effectiveness: The light began to fail.

Use "fail" in a sentence

  • "'You can't fail,' she said, '_I won't let you fail_!'"
  • "[Illustration: "And he," she said, "has still a chance if -- I fail you?"] "Of course -- if you _fail_ me.""
  • "We shall not fail -- if we stand firm, we _shall not fail_."

Words like "fail"

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