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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.

Slaughter called it a "shocking admission", while Irranca Davies said the priorities didn't mean that there was not "relentless focus" on education standards.

From BBC

“Firestorm,” the first book about the Great Los Angeles Fires of 2025, pulls readers inside Soboroff’s reporter’s notebook and the nearly two relentless weeks he spent covering the Palisades and subsequent Eaton wildfire.

From Los Angeles Times

Big businesses, especially in the defence and aerospace sector, but also French luxury goods firms, are increasingly keen to hire the students as they face relentless cybersecurity and spying threats as well as sabotage.

From BBC

Their despair is compounded by having to cancel holidays due to the pressure of a relentless conveyor belt of cases.

From BBC

Australia's bowlers have been relentless for much of the series, and this was a day when their accuracy finally deserted them.

From BBC