drop out

Wordnet

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• chuck up the sponge, drop by the wayside, drop out, fall by the wayside, give up, quit, throw in, throw in the towel
  give up in the face of defeat of lacking hope
  

  eg: admit defeat; "In the second round, the challenger gave up"
• drop out
  leave school or an educational program prematurely
  

  eg: "Many students drop out because they are not prepared for our challenging program"