What does the word false mean?

Usage examples for false

  1. When the day of battle comes, may your false heart fail you! – Strange Pages from Family Papers by T. F. Thiselton Dyer
  2. If you refuse to tell me, I shall leave Earlescourt, and never look upon your false, fair face again. – Dora Thorne by Charlotte M. Braeme
  3. He had a sudden feeling of having been false to his trust. – The Haunted Bookshop by Christopher Morley