relentless

[ ri-lent-lis ]
/ rɪˈlɛnt lɪs /

adjective

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

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Origin of relentless

First recorded in 1585–95; relent + -less

synonym study for relentless

OTHER WORDS FROM relentless

re·lent·less·ly, adverbre·lent·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for relentless

British Dictionary definitions for relentless

relentless
/ (rɪˈlɛntlɪs) /

adjective

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

Derived forms of relentless

relentlessly, 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