- that does not relent; unyieldingly severe, strict, or harsh; unrelenting: a relentless enemy.
Origin of relentless
SynonymsSee more synonyms on Thesaurus.com
rigid, unbending, obdurate, adamant, unyielding. See inflexible.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for relentless
This was achieved only by a relentless program of technical advances.Flight 8501 Poses Question: Are Modern Jets Too Automated to Fly?
January 4, 2015
Make way not for ducklings but for relentless darkness: so the operative mantra goes.The Internet Embedded in Your Head
November 21, 2014
Now it is a race against time to see which moves faster—those suffering from the relentless problems or those who can stop them.What’s Worse Than Ebola in West Africa? Almost Everything
Barbie Latza Nadeau
October 23, 2014
Nothing illustrates this more tangibly than his relentless campaign against modern architecture.Imagining Prince Charles as King Makes All of Britain Wish They Could Leave Like Scotland
September 17, 2014
The relentless pace required us to impose a certain degree of emotional distance to get the job done.The Resilient City: New York After 9/11
September 11, 2014
"And that isn't the worst of it," the relentless daughter broke in.The Spenders
Harry Leon Wilson
What have I done that you should follow me with this relentless spite?
The nobleman tried yet harder, yet could not please his relentless critic.Camps, Quarters and Casual Places
They were businesslike, relentless, cold, they belonged to the world of the harbor!The Harbor
"Not that it would make any difference if she stayed," pursued the relentless George.The Prisoner of Zenda
- (of an enemy, hostile attitude, etc) implacable; inflexible; inexorable
- (of pace or intensity) sustained; unremitting
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 relentless
Online Etymology Dictionary, © 2010 Douglas Harper