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Synonyms

relentless

American  
[ri-lent-lis] / rɪˈlɛnt lɪs /

adjective

  1. not easing or slackening; maintaining speed, vigor, etc..

    a relentless barrage of bad news.

  2. unyieldingly severe, strict, or harsh.

    a relentless crackdown on human rights.

    Synonyms:
    unyielding, adamant, obdurate, unbending, rigid
    Antonyms:
    merciful

relentless British  
/ rɪˈlɛntlɪs /

adjective

  1. (of an enemy, hostile attitude, etc) implacable; inflexible; inexorable

  2. (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

Related Words

See inflexible.

Other Word Forms

  • relentlessly adverb
  • relentlessness noun

Etymology

Origin of relentless

First recorded in 1585–95; relent + -less

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Sev had always impressed me with his creativity and relentless work ethic.

From Los Angeles Times

This relentless upgrading of videogame consoles was unpopular at first, but eventually helped change the way Americans viewed electronics.

From The Wall Street Journal

After 11 closely contested rounds, in which Ball was at times typically bullish on the inside and Figueroa responded with relentless volume, the fight turned in an instant.

From BBC

Casting its relentless sunshine as a background character, coaxing neighbors out of their shells and into verdant parks and yards and onto their manicured streets, is part of that.

From Salon

You would be forgiven for thinking the rain this year has been relentless - because in some parts of the UK, it actually has been.

From BBC