adjective mer·ci·less \ˈmər-si-ləs\

: having or showing no mercy : very cruel or harsh

Full Definition of MERCILESS

:  having or showing no mercy :  pitiless
mer·ci·less·ly adverb
mer·ci·less·ness noun

Examples of MERCILESS

  1. the merciless killing of innocent people
  2. He has been merciless in his criticism of his opponent.

First Known Use of MERCILESS

14th century


Next Word in the Dictionary: mercurial (adjective)Previous Word in the Dictionary: mercifullyAll Words Near: merciless
April 19, 2015
desiccate Hear it
to dry up or become dried up
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears