To Fail

(intransitive) To be unsuccessful.
(transitive) Not to achieve a particular stated goal. (Usage note: The direct object of this word is usually an infinitive.)
(transitive) To neglect.
(intransitive) Of a machine, etc.: to cease to operate correctly.
(transitive) To be wanting to, to be insufficient for, to disappoint, to desert. :{
(transitive, intransitive) To receive one or more non-passing grades in academic pursuits.
(transitive) To give a student a non-passing grade in an academic endeavour.
(transitive, obsolete) 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.
(archaic) To be affected with want; to come short; to lack; to be deficient or unprovided; used with of.
(archaic) To fall away; to become diminished; to decline; to decay; to sink.
(archaic) To deteriorate in respect to vigour, activity, resources, etc.; to become weaker.
(obsolete) To perish; to die; used of a person.
(obsolete) To err in judgment; to be mistaken.
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.

This is a catenative verb which takes the to infinitive. See Appendix:English catenative verbs