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demented
WIKTIONARY
demented
Adjective
  • Insane or mentally ill.
  • Suffering from dementia.
  • Crazy; ridiculous. informal
Verb
  • simple past tense and past participle of dement
dement
Adjective
  • insane, demented obsolete
Noun
  • An insane person, or one afflicted with dementia
Verb
  • To drive mad; to craze transitive