What does the word monomania mean?

Usage examples for monomania

  1. It's a disease, I tell you- a monomania like any other monomania. – Out of the Primitive by Robert Ames Bennet
  2. Indeed, his passion for this sort of literature had become a monomania. – The Life of Sir Richard Burton by Thomas Wright
  3. Dave shook his head at the old man's monomania. – The Sky Is Falling by Lester del Rey