Definition of Fail

1. Verb. Fail to do something; leave something undone. "The secretary failed to call the customer and the company lost the account"

Exact synonyms: Neglect
Specialized synonyms: Lose Track, Strike Out, Default, Default On, Choke, Muff, Miss
Derivative terms: Failure, Neglect

2. Verb. Be unsuccessful. "The attempt to rescue the hostages failed miserably"

3. Verb. Disappoint, prove undependable to; abandon, forsake. "His children failed him in the crisis"
Exact synonyms: Betray
Generic synonyms: Disappoint, Let Down

4. Verb. Stop operating or functioning. "These cars won't fail "; "Her eyesight went after the accident"

5. Verb. Be unable. "I fail to understand your motives"
Antonyms: Manage

6. Verb. Judge unacceptable. "The teacher failed six students"
Generic synonyms: Evaluate, Judge, Pass Judgment
Related verbs: Bomb, Flunk, Flush It
Derivative terms: Failing
Antonyms: Pass

7. Verb. Fail to get a passing grade. "Did I fail the test?"
Exact synonyms: Bomb, Flunk, Flush It
Derivative terms: Bomb, Failing
Antonyms: Pass

8. Verb. Fall short in what is expected. "We must not fail his obligation to the victims of the Holocaust"
Related verbs: Bomb, Flunk, Flush It
Derivative terms: Failing, Failure

9. Verb. Become bankrupt or insolvent; fail financially and close. "A number of banks failed that year"
Derivative terms: Failure

10. Verb. Prove insufficient. "The water supply for the town failed after a long drought"
Exact synonyms: Give Out, Run Out

11. Verb. Get worse. "Her health is declining"
Generic synonyms: Decline, Worsen

Definition of Fail

1. v. i. To be wanting; to fall short; to be or become deficient in any measure or degree up to total absence; to cease to be furnished in the usual or expected manner, or to be altogether cut off from supply; to be lacking; as, streams fail; crops fail.

2. v. t. To be wanting to ; to be insufficient for; to disappoint; to desert.

3. n. Miscarriage; failure; deficiency; fault; -- mostly superseded by failure or failing, except in the phrase without fail.

Definition of Fail

1. Verb. (intransitive) To be unsuccessful. ¹

2. Verb. (transitive) Not to achieve a particular stated goal. (Usage note: The direct object of this word is usually an infinitive.) ¹

3. Verb. (transitive) To neglect. ¹

4. Verb. (intransitive of a machine, etc.) To cease to operate correctly. ¹

5. Verb. (transitive) To be wanting to, to be insufficient for, to disappoint, to desert. ¹

6. Verb. (intransitive) To receive one or more non-passing grades in academic pursuits. ¹

7. Verb. (transitive) To give a student a non-passing grade in an academic endeavour. ¹

8. Noun. a failure, especially of a financial transaction ¹

9. Noun. a failing grade in an academic examination ¹

¹ Source:

Definition of Fail

1. to be unsuccessful in an attempt [v -ED, -ING, -S]

Fail Pictures

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Lexicographical Neighbors of Fail

fail (current term)
fail over
failed back syndrome
failed state
failed states

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