8. fail (of a building member, structure, machine part, etc.) to break, bend, or be otherwise destroyed or made useless because of an excessive load.
9. (v.t.)fail to be unsuccessful in the performance or completion of: He failed to do his duty.
10. fail to prove of no use or help to: His friends failed him.
11. fail to receive less than a passinggrade or mark in.
12. fail to declare (a person) unsuccessful in a test or course of study; give less than a passinggrade to.
13. (n.)fail a stockbroker's inability to deliver or receive security within the required time after sale or purchase.
14. fail Obs. failure as to performance, occurrence, etc.
Definition of 'fail'
Princeton's WordNet
1. (verb)fail, neglect fail to do something; leave something undone "She failed to notice that her child was no longer in his crib"; "The secretary failed to call the customer and the company lost the account"
2. (verb)fail, go wrong, miscarry be unsuccessful "Where do today's public schools fail?"; "The attempt to rescue the hostages failed miserably"
3. (verb)fail, betray disappoint, prove undependable to; abandon, forsake "His sense of smell failed him this time"; "His strength finally failed him"; "His children failed him in the crisis"
4. (verb)fail, go bad, give way, die, give out, conk out, go, break, break down stop operating or functioning "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident"
5. (verb)fail be unable "I fail to understand your motives"
6. (verb)fail judge unacceptable "The teacher failed six students"
7. (verb)fail, flunk, bomb, flush it fail to get a passing grade "She studied hard but failed nevertheless"; "Did I fail the test?"
8. (verb)fail fall short in what is expected "She failed in her obligations as a good daughter-in-law"; "We must not fail his obligation to the victims of the Holocaust"
9. (verb)fail become bankrupt or insolvent; fail financially and close "The toy company went bankrupt after the competition hired cheap Mexican labor"; "A number of banks failed that year"
10. (verb)fail, run out, give out prove insufficient "The water supply for the town failed after a long drought"
11. (verb)fail get worse "Her health is declining"
1. (verb)fail ≠ succeed The rocket launch failed.; The climbers failed to reach the top of the mountain.
2. fail to not do sth you are supposed to She failed to come to the hearing.
3. fail ≠ pass I failed that exam/class.; "How was the test?" "I failed."
4. fail (of teacher) to give a student a grade that is below passing The professor failed half the class.
5. fail to stop working or progressing well The brakes failed.; Her health was failing.
6. fail (of business) to be unable to continue operating new laws to stop banks from failing
7. (noun)fail a grade that is below passing ***He got a 53, which is a fail.
8. fail without fail always He was there every morning without fail.
Definition of 'fail'
Webster Dictionary
1. (verb)fail 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. (verb)fail to be affected with want; to come short; to lack; to be deficient or unprovided; -- used with of
3. (verb)fail to fall away; to become diminished; to decline; to decay; to sink
4. (verb)fail to deteriorate in respect to vigor, activity, resources, etc.; to become weaker; as, a sick man fails
5. (verb)fail to perish; to die; -- used of a person
6. (verb)fail to be found wanting with respect to an action or a duty to be performed, a result to be secured, etc.; to miss; not to fulfill expectation
9. (verb)fail 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
10. (verb)fail to be wanting to ; to be insufficient for; to disappoint; to desert
11. (verb)fail to miss of attaining; to lose
12. (verb)fail miscarriage; failure; deficiency; fault; -- mostly superseded by failure or failing, except in the phrase without fail
Definitions of fail 
Afrikaans: faal, druip, versuim
Arabic: يَفْشَل
Bulgarian: провалям (се)
Brazilian: falhar/fracassar
Czech: neuspět, nepodařit se
German: versagen, versäumen
Danish: fejle; mislykkes; ikke ku
Greek: αποτυγχάνω, δεν καταφέρνω
Spanish: fracasar
Estonian: ebaõnnestuma, tegemata jä
Farsi: رد شدن؛ ناکام شدن
Finnish: epäonnistua
French: échouer (à)
Hebrew: לְהִכָּשֵל @@@לְהִיכָּשֵל
Hindi: चूकना, असफल होना
Croatian: ne uspjeti, pasti (na isp
Hungarian: nem sikerül
Indonesian: gagal
Icelandic: mistakast; falla
Italian: fallire, non riuscire
Japanese: 失敗する
Korean: 실패하다
Lithuanian: ko nors nepadaryti, nepav
Latvian: ciest neveiksmi; izkrist 
Malay: gagal
Dutch: er niet in slagen
Norwegian: mislykkes, slå feil, ikke
Polish: nie spełnić, doznać niepo
Persian: رد شدن؛ ناکام شدن
Pashto: ناكامېدل، له كاره لوېدل، 
Portuguese: não conseguir/falhar, fra
Romanian: a nu reuşi
Russian: терпеть неудачу
Slovak: zlyhať
Slovenian: spodleteti
Serbian: ne uspeti
Swedish: misslyckas, få underkänt,
Thai: ล้มเหลว
Turkish: başarısız olmak
Taiwanese: 失敗
Ukrainian: зазнати невдачі; не зроби
Urdu: ناکامیاب ہونا
Vietnamese: thất bại
Chinese: 失败
