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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

: to lose strength : weaken
: to fade or die away
: to stop functioning normally

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

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