fail

(noun): Poor quality; substandard workmanship.
(noun): A failure (condition of being unsuccessful)
(noun): A failure (something incapable of success)
(noun): A failure, especially of a financial transaction (a termination of an action).
(noun): A failing grade in an academic examination.
(verb): To be unsuccessful.
(verb): Not to achieve a particular stated goal. (Usage note: The direct object of this word is usually an infinitive.)
(verb): To neglect.
(verb): Of a machine, etc.: to cease to operate correctly.
(verb): To be wanting to, to be insufficient for, to disappoint, to desert.
(verb): To receive one or more non-passing grades in academic pursuits.
(verb): To give a student a non-passing grade in an academic endeavour.
(verb): To miss attaining; to lose.
(verb): To be wanting; to fall short; to be or become deficient in any measure or degree up to total absence.
(verb): To be affected with want; to come short; to lack; to be deficient or unprovided; used with of.
(verb): To fall away; to become diminished; to decline; to decay; to sink.
(verb): To deteriorate in respect to vigour, activity, resources, etc.; to become weaker.
(verb): To perish; to die; used of a person.
(verb): To err in judgment; to be mistaken.
(verb): To become unable to meet one's engagements; especially, to be unable to pay one's debts or discharge one's business obligation; to become bankrupt or insolvent.
(adjective): That is a failure.