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

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

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.

Jul 24, 2025 · ‘Fail’ means to be unsuccessful in doing something, to not achieve a desired result, or to break down in function or responsibility. It also can mean to stop working or to be …

Synonyms: not pass, be unsuccessful, flunk [informal], screw up [informal] More Synonyms of fail

It never fails to rain [=it always rains] when I plan to take a day off. I fail to see/understand [=I don't see/understand] why we need to change the current system. [=I don't think we need to …

Definition of fail verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The verb fail describes something that stops working, like brakes in a car that fail, or is found to be unacceptable, like restaurants that fail their inspection for cleanliness.