What does the word deathly mean?

Usage examples for deathly

  1. White peaks and snow- fields were wrapped in deathly silence: there was not even the howl of a prowling wolf or the splash of falling water. – Prescott of Saskatchewan by Harold Bindloss
  2. Miriam, her worst suspicions confirmed, had turned deathly pale. – A Woman's Burden by Fergus Hume
  3. What a deathly mistake for all of us! – The Dark Star by Robert W. Chambers