fail

To be unsuccessful.

Not to achieve a particular stated goal. (Usage note: The direct object of this word is usually an infinitive.)

To neglect.

Of a machine, etc.: to cease to operate correctly.

To be wanting to, to be insufficient for, to disappoint, to desert; to disappoint one's expectations.

To receive one or more non-passing grades in academic pursuits.

To give a student a non-passing grade in an academic endeavour.

To miss attaining; to lose.

To be wanting; to fall short; to be or become deficient in any measure or degree up to total absence.

To be affected with want; to come short; to lack; to be deficient or unprovided; used with of.