Synonyms of fail in English:

fail


See definition of fail

verb

1‘they could not explain why the enterprise had failed’

SYNONYMS

be unsuccessful, not succeed, lack success, fall through, fall flat, break down, abort, miscarry, be defeated, suffer defeat, be in vain, be frustrated, collapse, founder, misfire, backfire, not come up to scratch, meet with disaster, come to grief, come to nothing, come to naught, miss the mark, run aground, go astray

informal flop, fizzle out, flatline, come a cropper, bite the dust, bomb, blow up in someone's face, go down like a lead balloon

ANTONYMS

succeed

2‘he failed all his examinations’

SYNONYMS

be unsuccessful in, not pass

be found wanting, be found deficient, not make the grade, not pass muster, not come up to scratch, be rejected

informal flunk

ANTONYMS

pass

3‘he felt that his friends had failed him’

SYNONYMS

let down, disappoint, break one's promise to, dash someone's hopes, fall short of someone's expectations

neglect, desert, abandon

betray, be disloyal to, be unfaithful to, break faith with, play someone false

informal do the dirty on

North American informal bail on

archaic forsake

ANTONYMS

support

4‘the crops failed’

SYNONYMS

be deficient, be wanting, be lacking, fall short, be insufficient, be inadequate

not come to ripeness, wither

ANTONYMS

thrive

5‘they went to bed when the daylight failed’

SYNONYMS

fade, grow less, grow dim, dim, die away, dwindle, wane, disappear, vanish, peter out, dissolve

6‘the ventilation system failed’

SYNONYMS

break down, break, stop working, cease to function, cut out, stop, stall, crash, give out

malfunction, act up, go wrong, develop a fault, be faulty, be defective

informal conk out, go kaput, go phut, give up the ghost, go on the blink, be on the blink

British informal pack up, play up

ANTONYMS

work, be in working order

7‘Ceri's health was failing’

SYNONYMS

deteriorate, degenerate, decline, go into decline, fade, diminish, dwindle, wane, ebb, sink, collapse, decay

ANTONYMS

improve

8‘there are 900 businesses failing a week’

SYNONYMS

collapse, crash, go under, go bankrupt, become insolvent, go into receivership, be in the hands of the receivers, go into liquidation, cease trading, cease production, be closed, be shut down, close down, be wound up

informal fold, flop, go bust, go broke, go bump, go to the wall, go belly up

ANTONYMS

thrive