動詞 fail:

1. fail to do something; leave something undone
   同義詞：neglect
2. be unsuccessful
   同義詞：go wrong, miscarry
3. disappoint, prove undependable to; abandon, forsake
   同義詞：betray
4. stop operating or functioning
   同義詞：go bad, give way, die, give out, conk out, go, break, break down
5. be unable
6. judge unacceptable
7. fail to get a passing grade
   同義詞：flunk, bomb, flush it
8. fall short in what is expected
9. become bankrupt or insolvent; fail financially and close
10. prove insufficient
    同義詞：run out, give out
11. get worse

1. Several banks failed during the depression.
   有幾家銀行在不景氣時期倒閉了。
2. He never fails to write to his mother every week.
   他從來沒有忘記每周給母親寫信。
3. He got a fail in history and passes in other subjects.
   他歷史考試不及格，其他科目都通過了。
4. I fail to see why you find it so amusing.
   我不明白你們?yōu)槭裁磳@件事感到如此好笑。
5. I tried to fix the equipment but I failed.
   我想把機器修理好，但是失敗了。

fail

v.（動詞）
failed,fail.ing,fails
v.intr.（不及物動詞）
To prove deficient or lacking; perform ineffectively or inadequately.
表現(xiàn)欠佳：證明不足或不夠；活動受損或不充足
To be unsuccessful:
失?。翰怀晒Γ?/br>例句：
a valiant attempt that failed.
雖敗猶榮

To receive an academic grade below the acceptable minimum.
不及格：達到的學(xué)術(shù)等級低于最低限度

To prove insufficient in quantity or duration; give out:
用盡：數(shù)量或持續(xù)時間證明為不足；用完：
例句：
The water supply failed during the drought.
在干旱期供水不足

To fall short, as in what is expected of one:
未達成：不能達到別人所期望的：
例句：
failed in her obligations to the family.
她對家庭沒有盡到責(zé)任

To decline, as in strength or effectiveness:
減弱：力量減弱或功能衰退：
例句：
The patient`s heart failed.
病人的心跳減弱

To cease functioning properly:
徹底中止運轉(zhuǎn)：
例句：
The engine failed.
引擎徹底停止了運轉(zhuǎn)

To become bankrupt or insolvent:
破產(chǎn)：
例句：
Our family business failed in 929.
929年我們家族破產(chǎn)了

v.tr.（及物動詞）
To disappoint or prove undependable to:
使失望或不可信賴：
例句：
Our sentries failed us.
我們的哨兵令我們失望

To abandon; forsake:
拋棄；放棄：
例句：
His strength failed him.
他喪失了力氣

To omit to perform (an expected duty, for example):
遺漏未做：忽略而未能完成（例如，所期望的任務(wù)）：
例句：
.We must . . . hold . . . those horrors up to the light of justice. Otherwise we would fail our inescapable obligation to the victims of Nazism: to remember.(Anthony Lewis)
.記住：我們必須將那些慘事交付法庭審判。否則，對遭受法西斯主義迫害的人，我們將無法盡到應(yīng)盡的責(zé)任.(安東尼·劉易斯)

To leave (something) undone; neglect:
疏忽：留下（某事）沒做完；疏忽：
例句：
failed to wash the dishes.
忘了洗盤子

To receive an academic grade below the acceptable minimum in (a course, for example):
不及格：達到的學(xué)術(shù)等級低于能接受的最低限度（如某門課程）：
例句：
failed algebra twice.
代數(shù)兩次不及格

To give such a grade of failure to (a student):
給（學(xué)生）不及格：
例句：
failed me in algebra.
給我代數(shù)不及格

n.（名詞）

Failure to deliver securities to a purchaser within a specified time.
保證失信：未能在特定時間內(nèi)將保證金交給買主
Failure to receive the proceeds of a transaction, as in the sale of stock or securities, by a specified date.
交割失信：在股票或抵押品售出后，未能在規(guī)定日期內(nèi)辦理交接手續(xù)

<習(xí)慣用語>without fail
With no chance of failure:
一定，必定：沒有失敗的可能：
例句：
Be here at noon without fail.
一定在正午時到這里

來源：
Middle English failen
中古英語 failen
from Old French faillir
源自 古法語 faillir
from Vulgar Latin *fallore
源自 俗拉丁語 *fallore
variant of Latin fallere [to deceive]
拉丁語 fallere的變體 [欺騙]