fail

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fail¹

  • /feɪl/

Sounds like fell (fell-fail merger) · Rhymes with -eɪl

Where it comes from

Inherited from Middle English failen, borrowed from Old French falir, from Vulgar Latin *fallire, alteration of Latin fallere (“to deceive, disappoint”), from Proto-Indo-European *bʰāl- (“to lie, deceive”) or Proto-Indo-European *(s)gʷʰh₂el- (“to stumble”).

Compare Alemannic German fääle (“to lack”), Cimbrian béelan, véelan (“to fail”), veln (“to be absent, missing”), Dutch falen, feilen (“to fail, miss”), German fallieren, fehlen (“to fail, miss, lack”), Danish fejle (“to fail, err”), Swedish fallera (“to fail, break, malfunction”), Spanish fallar (“to fail, miss”).

verb fails · failing · failed · fail

  1. intransitive To be unsuccessful. Throughout my life, I have always failed.

    Similar: miscarry, founder, come to nought, come to nothing, crash and burn, fall flat, fall on one's face, go downhill, go down the toilet, go to pot, go to the dogs, go up in flames

  2. transitive Not to achieve a particular stated goal. (Usage note: The direct object of this word is usually an infinitive.) The truck failed to start.
  3. transitive To neglect. The report fails to take into account all the mitigating factors.
  4. intransitive Of a machine, etc.: to cease to operate correctly. After running five minutes, the engine failed.
  5. transitive To be wanting to, to be insufficient for, to disappoint, to desert; to disappoint one's expectations. I've failed my parents many times growing up.
  6. ambitransitive To receive one or more non-passing grades in academic pursuits. I failed English last year.

    Similar: flunk

  7. transitive To give a student a non-passing grade in an academic endeavour. The professor failed me because I did not complete any of the course assignments.
  8. obsolete, transitive To miss attaining; to lose. though that seat of earthly bliss be failed
  9. To be wanting; to fall short; to be or become deficient in any measure or degree up to total absence. The crops failed last year.

    Similar: go, bomb, bust, conk, tank

  10. archaic To be affected with want; to come short; to lack; to be deficient or unprovided; used with of. If ever they fail of beauty, this failure is not to be attributed to their size.
  11. archaic To fall away; to become diminished; to decline; to decay; to sink. When earnestly they seek / Such proof, conclude they then begin to fail.
  12. archaic To deteriorate in respect to vigour, activity, resources, etc.; to become weaker. A sick man fails.
  13. obsolete To perish; to die; used of a person. had the king in his last sickness failed
  14. obsolete To err in judgment; to be mistaken. Which ofttimes may succeed, so as perhaps / Shall grieve him, if I fail not.
  15. intransitive 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. "But you cannot tell where she went on leaving here?" Robert asked, despondingly. "No, sir; missus says she believes the lady failed, and that she left sudden like, and didn't want her address to be known in the neighbourhood."

Opposite: succeed

noun fails · faile · fayle

  1. countable, uncountable A failure, especially of a financial transaction (a termination of an action).
  2. countable, uncountable A failing grade in an academic examination.
  3. US, countable, slang, uncountable A failure (something incapable of success).
  4. slang, uncountable Poor quality; substandard workmanship. The project was full of fail.

adjective more fail · most fail · faile · fayle

  1. US, slang Unsuccessful; inadequate; unacceptable in some way.

fail²

  • /feɪl/

Sounds like fell (fell-fail merger) · Rhymes with -eɪl

Where it comes from

Unknown. Compare Scottish Gaelic fàl (“hedge”), Scots faill (“turf”). Attested from the 16th century.

noun fails · feal

  1. A piece of turf cut from grassland.

Fail³

Where it comes from

* As a Scottish and Irish surname, shortened from McPhail.

* As a Manx surname, variant of Fayle.

* As a south German surname, from the adjective feil (“for sale”).

proper noun Fails

  1. A surname.

Thesaurus

Closest in meaning: flunk, miscarry, neglect, go wrong, die, break down, betray, conk out, break, give way, run out, give out, bomb, go, flush it, miss

verb

Opposite: succeed

Translations

Every language

verb cause to fail

Portuguêsreprovar
Françaisrecaler
Românăstrica
Русскийпрова́ливать proválivatʹ, провали́ть provalítʹ

verb intransitive: be unsuccessful

Españolfracasar, zozobrar, escollar
한국어실패하다 silpaehada
日本語失敗する shippai suru
中文失敗 /失败 shībài
Portuguêsfalhar, fracassar
Françaiséchouer, rater
Deutschscheitern, keinen Erfolg haben, ohne Erfolg bleiben, nicht gelingen, missglücken
Italianobocciare, fallire
Ελληνικάαποτυγχάνω apotyncháno
Românărata
Русскийтерпе́ть неуда́чу terpétʹ neudáču, потерпе́ть неуда́чу poterpétʹ neudáču, прова́ливаться proválivatʹsja, провали́ться provalítʹsja, не удава́ться ne udavátʹsja, не уда́ться ne udátʹsja
Tiếng Việtthất bại
العربيةأَخْفَقَ ʔaḵfaqa, فَشِلَ fašila
עבריתכשל kashál

verb transitive: not achieve a stated goal

Españolnegar, fracasar, no conseguir, darse un sentón, no lograr, no llegar a
Portuguêsdeixar de, não conseguir
Françaisfaillir, échouer, rater
Deutschfehlschlagen
Italianofallire, cannare, toppare, fare cilecca
Русскийтерпе́ть неуда́чу terpétʹ neudáču, потерпе́ть неуда́чу poterpétʹ neudáču, не справля́ться ne spravljátʹsja, не спра́виться ne správitʹsja
עבריתנִכְשַׁל nikhshál

verb be negligent

Portuguêsdeixar de
Françaisnégliger, oublier, omettre
Italianomancare, omettere, negligere, ignorare, tralasciare
Русскийпренебрега́ть prenebregátʹ, пренебре́чь prenebréčʹ

verb cease to operate

Españolpararse
中文故障 gùzhàng
Portuguêspifar, falhar
Françaistomber en panne, cesser, s'arrêter
Deutschversagen
Italianofallire, andare in bancarotta, fare bancarotta
Românăse strica
Русскийвыходи́ть из стро́я vyxodítʹ iz strója, вы́йти из стро́я výjti iz strója, не рабо́тать ne rabótatʹ

verb to be wanting to, to be insufficient for, to disappoint, to desert

Españolreprobar
Françaisdécevoir, être insuffisant

verb to receive one or more non-passing grades in academic pursuits

Españolsuspender, desaprobar, reprobar, improbar, catear, fallar
Françaisrater
Deutschdurchfallen
Românăpica
Русскийпровалить provalitʹ
العربيةرَسَبَ rasaba

verb to give a student a non-passing grade

Españolcatear, reprobar, suspender, desaprobar, improbar
Françaissaquer, recaler

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MLA

"fail." Wiktionary, via Micwyn, micwyn.com/word/fail. Accessed 6 Nov. 2026.

APA

fail. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/fail

Chicago

"fail." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/fail.

BibTeX
@misc{fail_2026,
  title = {fail},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/fail},
  urldate = {2026-11-06}
}