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Verb: deteriorate  di'teer-ee-u,reyt
  1. Become worse or disintegrate
    "His mind deteriorated"
  2. Grow worse
    "Her condition deteriorated";
    - devolve, drop, degenerate

Derived forms: deteriorating, deteriorated, deteriorates

Type of: crumble, decay, decline, dilapidate, worsen

Antonym: recuperate

Encyclopedia: Deteriorate