Idioms

    without fail, with certainty; positively: I will visit you tomorrow without fail.

Origin of fail

1175–1225; Middle English failen < Anglo-French, Old French faillir < Vulgar Latin *fallīre, for Latin fallere to disappoint, deceive

Related forms

un·failed, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for fail

British Dictionary definitions for fail (1 of 2)

fail

1
/ (feɪl) /

verb


noun

a failure to attain the required standard, as in an examination
without fail definitely; with certainty

Word Origin for fail

C13: from Old French faillir, ultimately from Latin fallere to disappoint; probably related to Greek phēlos deceitful

British Dictionary definitions for fail (2 of 2)

fail

2
/ (fel) /

noun

Scot a turf; sod

Word Origin for fail

perhaps from Scottish Gaelic fàl
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with fail

fail

see without fail; words fail me.


The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.