What does the word deadly mean?

Usage examples for deadly

  1. And we have a cold war with only one country, and they're the only ones who'd play a deadly trick like this. – Operation Terror by William Fitzgerald Jenkins
  2. And of those who were left behind, of those who stayed in the glades to gather the deadly flowers, to be driven ever forward by the whip of Time- what of them? – The Soul of a People by H. Fielding