conk out

(Informal) fall asleep; cease to function; run out of energy or fuel; faint, pass out; die

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Verb
1. stop operating or functioning; "The engine finally went"; "The car died on the road"; "The bus we travelled in broke down on the way to town"; "The coffee maker broke"; "The engine failed on the way to town"; "her eyesight went after the accident"
(synonym) fail, go bad, give way, die, give out, go, break, break down
(hypernym) change
(hyponym) crash, go down
(verb-group) die, decease, perish, go, exit, pass away, expire, pass
2. use up all one's strength and energy and stop working; "At the end of the march, I pooped out"
(synonym) poop out, peter out, run down, run out
(hypernym) tire, pall, weary, fatigue, jade

quit, not work any more, sleep, give out The TV conked out just after the movie started.

Synonyms and related words:
be done for, be no more, break, break down, cave in, cease, collapse, come apart, come to naught, come to nothing, come unstuck, crumble, decline, die, disappear, disintegrate, droop, drop, end, expire, fade, fade away, fail, faint, fizzle out, flag, flame out, give out, give way, go, go dead, go downhill, go haywire, go kaput, go soft, go to pieces, go wrong, hit the skids, languish, lose power, pack up, pass, pass away, peg out, perish, peter out, pine, poop out, run out, sink, sputter and stop, stall, stick, succumb, vanish, weaken, wear away, wear thin, wilt, yield,
  

GUASTARSI. INCEPPARSI. SFASCIARSI