merciless

[ mur-si-lis ]
See synonyms for: mercilessmercilesslymercilessness on Thesaurus.com

adjective
  1. without mercy; having or showing no mercy; pitiless; cruel: a merciless critic.

Origin of merciless

1
First recorded in 1300–50; Middle English mercyles; see mercy, -less

Other words for merciless

Opposites for merciless

Other words from merciless

  • mer·ci·less·ly, adverb
  • mer·ci·less·ness, noun

Words Nearby merciless

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use merciless in a sentence

British Dictionary definitions for merciless

merciless

/ (ˈmɜːsɪlɪs) /


adjective
  1. without mercy; pitiless, cruel, or heartless

Derived forms of merciless

  • mercilessly, adverb
  • mercilessness, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012