Verb conk out has 2 senses
  1. fail, go bad, give way, die, give out, conk out, go, break, break down - 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"
    --1 is one way to change
    Sample sentence:
    These cars won't conk out
  2. poop out, peter out, run down, run out, conk out - use up all one's strength and energy and stop working; "At the end of the march, I pooped out"
    --2 is one way to tire, pall, weary, fatigue, jade
    Sample sentence:
    Somebody ----s
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