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without fail

idiom

Definition of without fail

1 —used to stress that something always happens
  • Every day, without fail, he has toast and coffee for breakfast.
2 —used to stress that something will definitely happen
  • She promised that she would be there without fail.

Word by Word Definitions

fail play

  1. : to lose strength : weaken

  2. : to fade or die away

  3. : to stop functioning normally

  1. : failure

  2. : a failure (as by a security dealer) to deliver or receive securities within a prescribed period after purchase or sale

See the full definition of fail

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