Fail

Synonyms: Break down, stop working, cut out, stall, give out, act up, develop a fault, be defective, go kaput, give up the ghost, be on the blink, play up, break, cease to function, stop, crash, malfunction, go wrong, be faulty, conk out, go phut, go on the blink, and pack up.

Synonyms: Fade, grow dim, die away, wane, vanish, dissolve, degenerate, go into decline, ebb, collapse, grow less, dim, dwindle, disappear, peter out, deteriorate, decline, diminish, sink, and decay.

Synonyms: Be deficient, be lacking, be insufficient, not come to ripeness, be wanting, fall short, be inadequate, and wither.

Synonyms: Be unsuccessful, lack success, fall flat, abort, be defeated, be in vain, collapse, misfire, not come up to scratch, come to grief, come to naught, run aground, flop, flatline, bite the dust, blow up in someone's face, crash, go bankrupt, go into receivership, cease trading, be closed, close down, fold, go broke, go to the wall, not succeed, fall through, break down, miscarry, suffer defeat, be frustrated, founder, backfire, meet with disaster, come to nothing, miss the mark, go astray, fizzle out, come a cropper, bomb, go down like a lead balloon, go under, become insolvent, go into liquidation, cease production, be shut down, be wound up, go bust, go bump, and go belly up.