Part of speech: adjective

Not sane; crazy; irrational.

Part of speech: adjective

Pertaining to insanity or the insane.

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Usage examples "insane":

  1. She was literally insane. - "Happiness and Marriage", Elizabeth (Jones) Towne.
  2. Had she become insane and wandered away? - "Divers Women", Pansy and Mrs. C.M. Livingston.
  3. Minna admitted that things looked dark for him on account of the insane prejudice that would be against him for his views on children. - "Ma Pettengill", Harry Leon Wilson.