that does not relent; unyieldingly severe, strict, or harsh; unrelenting: a relentless enemy.

Origin of relentless

First recorded in 1585–95; relent + -less
Related formsre·lent·less·ly, adverbre·lent·less·ness, noun

Synonyms for relentless

Antonyms for relentless Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for relentlessly

Contemporary Examples of relentlessly

Historical Examples of relentlessly

  • Strive and grope as he would, the thing had driven him on relentlessly.

    The Spenders

    Harry Leon Wilson

  • She would be cross-examined, kindly enough but relentlessly.

  • The vivid image of Miss Haldin seemed to stand by him, watching him relentlessly.

    Under Western Eyes

    Joseph Conrad

  • The dream moved on relentlessly toward its inevitable catastrophe.


    Cleveland Moffett

  • “Hit's the fourth time since sorghum time,” the boy went on relentlessly.

British Dictionary definitions for relentlessly



(of an enemy, hostile attitude, etc) implacable; inflexible; inexorable
(of pace or intensity) sustained; unremitting
Derived Formsrelentlessly, adverbrelentlessness, 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

Word Origin and History for relentlessly



1590s, from relent + -less. Related: Relentlessly; relentlessness.

Online Etymology Dictionary, © 2010 Douglas Harper