[ hahrt-lis ]
See synonyms for: heartlessheartlesslyheartlessness on Thesaurus.com

  1. unfeeling; unkind; unsympathetic; harsh; cruel: heartless words; a heartless ruler.

  2. Archaic. lacking courage or enthusiasm; spiritless; disheartened.

Origin of heartless

1300–50; Middle English herteles,Old English heortlēas.See heart, -less

Other words from heartless

  • heart·less·ly, adverb
  • heart·less·ness, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use heartless in a sentence

  • Why was the Spring Longing so insolently apparent in every bud and bough, and why did they flaunt it so heartlessly in his face?

    Lives of the Fur Folk | M. D. Haviland
  • I wouldn't mind betting that you cleaned him out, and then heartlessly turned him adrift.

    In Friendship's Guise | Wm. Murray Graydon

British Dictionary definitions for heartless


/ (ˈhɑːtlɪs) /

  1. unkind or cruel; hard-hearted

Derived forms of heartless

  • heartlessly, adverb
  • heartlessness, 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