What does the word insane mean?

Usage examples for insane

  1. She was literally insane. – Happiness and Marriage by Elizabeth (Jones) Towne
  2. Had she become insane and wandered away? – Divers Women by 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 by Harry Leon Wilson