The meaning of FAIL is to lose strength : weaken. How to use fail in a sentence.

Fail definition: to fall short of success or achievement in something expected, attempted, desired, or approved.. See examples of FAIL used in a sentence.

FAIL definition: 1. to not succeed in what you are trying to achieve or are expected to do: 2. if none of our plans…. Learn more.

1. A failing grade: The student received a fail on the final paper. 2. Informal Something that does not achieve the desired result; a failure: My first attempt to make flourless cookies was a big fail.

fail (fāl), v.i. to fall short of success or achievement in something expected, attempted, desired, or approved: The experiment failed because of poor planning.

Oct 15, 2025 · fail (third-person singular simple present fails, present participle failing, simple past and past participle failed) (intransitive) To be unsuccessful. quotations Throughout my life, I …

"Where do today's public schools fail?"; "The attempt to rescue the hostages failed miserably "; - go wrong, miscarry Not do something; leave something undone "The secretary failed to call …

Synonyms for FAIL: die, crash, stall, break, cut out, give out, break down, sputter; Antonyms of FAIL: start (up), succeed, go, deliver, click, work out, go over, come off

fail meaning: 1. to not be successful: 2. to not do what is necessary or expected: 3. to not pass a test or an…. Learn more.

The brakes failed and the car crashed into a tree. (Definition of fail from the Webster's Essential Mini Dictionary © Cambridge University Press)