What does the word interest mean?

Usage examples for interest

  1. I know; because what have I to do but to interest myself in people who have affairs of interest? – The Mettle of the Pasture by James Lane Allen
  2. She is a nice little boy, and we are friends; but she doesn't interest me. – Amabel Channice by Anne Douglas Sedgwick
  3. What interest have you in this criminal? – Eastern Tales by Many Story Tellers by Various