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Adjective: deranged  di'reynjd
  1. Driven insane
    "She was lured to another woman's apartment and attacked by a deranged, knife-wielding assailant";
    - crazed, half-crazed
Verb: derange  di'reynj
  1. Throw into great confusion or disorder
    - perturb, throw out of kilter
  2. Derange mentally, throw out of mental balance; make insane
    "The death of his parents deranged him";
    - unbalance

See also: insane

Type of: craze, disarray, disorder, madden

Encyclopedia: Deranged