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Adjective: zonked out
Usage: informal
  1. Extremely exhausted
    "the day's shopping left her zonked out";
    - knackered [Brit, informal], drained, zonked [informal], shagged [Brit, informal], deadbeat [Brit, informal], shagged out [Brit, informal], stonkered [Brit, Austral, NZ, informal], shattered [Brit, informal], exhausted, dog-tired [informal], fagged [Brit, informal], fatigued, played out, spent, washed-out, worn-out, worn out, gone, shot [informal], pooped [N. Amer, informal], fried [N. Amer, informal], run-down
     
  2. Nearly unconscious from alcohol or drugs
    "After the party, he was completely zonked out on the couch";
    - zonked [informal]

See also: tired