What does the word forsooth mean?

Usage examples for forsooth

  1. He allowed mamma fifty pounds a year, and, if she were not such a fool, she might have had three times as much; but the old lady was high and mighty forsooth, and would not be beholden, even to her own daughter, for more than she actually wanted. – The Fatal Boots by William Makepeace Thackeray
  2. And you Boast of a wonderful, a mighty action, That you have saved the queen, have snatched away The mask from treachery; all is known to you; You think, forsooth, that nothing can escape Your penetrating eyes. – Mary Stuart A Tragedy by Frederich Schiller
  3. Forsooth the hours passed quickly for them with their sports. – The Nibelungenlied by Unknown