名词 可数名词：

1.不及格

v. 不及物动词：

1.失败

2.不及格

3.失灵；失去作用

4.（指健康）衰退；变弱；消失

5.破产；失去支付能力

6.缺乏，不足；（作物）歉收

及物动词：

1.失败；不能；忘记[+to-v]

2.没有通过（考试），评定（学生）不及格

3.使失望；有负于

4.舍弃（候选人等）

词形变化

时态failed，failing，fails

英语解释

fail to do something; leave something undone

judge unacceptable

disappoint, prove undependable to; abandon, forsake

become bankrupt or insolvent; fail financially and close

fall short in what is expected

get worse

prove insufficient

fail to get a passing grade

stop operating or functioning

be unsuccessful

be unable