fail

过去式：failed

过去分词：failed

现在进行时：failing

词形变化：

动词过去式: failed | 动词过去分词: failed | 动词现在分词: failing | 动词第三人称单数: fails |

同义词：

flunk | fade | weaken | lose | neglect | fall short | decline | fall | break down | nose-dive | bomb | pack up | crash | go bankrupt | go out of business | let down | disappoint | languish | abort | flop | lessen | collapse | droop | lose out | out | pine | miss | founder | tire | lower | be | unsuccessful | short | give out | die | run out | go wrong | break | go bad | conk out | go | flush it | give way | betray | miscarry |

反义词：

pass | succeed | manage |

词义辨析：

同义:

n.不及格

flunk

be unsuccessful

lose out

vt.忘记; 忽略

neglect

fall short

vi.变弱; 衰退

weaken

fade

decline

同义参见:

lessen

lose

pine²

collapse

bomb

languish

droop

fall

lower¹

flop

tire¹

miss¹

founder³

abort

反义:

vi.vt.失败

succeed

反义参见:

attain

achieve

pass