What does the word invariable mean?

Usage examples for invariable

  1. It was one of the peculiarities of this father and son that they were fond of expressing their regard for each other by indulging now and then in a little very mild " chaff," and the playful threat to give his son a " woppin'"- which in earlier years he had sometimes done with much effect- was an invariable proof that Little Tim's spirit had been calmed, and his amiability restored. – The Prairie Chief by R.M. Ballantyne
  2. When his guests depart, Schumann accompanies them a little way, that he may, according to his invariable custom, spend an hour or so of the evening at Popper's Restaurant. – A Day with Robert Schumann by May Byron
  3. This fatal issue, however, is not invariable. – The Mother's Manual of Children's Diseases by Charles West, M.D.