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Synonyms

ruthless

American  
[rooth-lis] / ˈruθ lɪs /

adjective

  1. without pity or compassion; cruel; merciless.

    a ruthless tyrant.

    Synonyms:
    relentless, adamant, unrelenting

ruthless British  
/ ˈruːθlɪs /

adjective

  1. feeling or showing no mercy; hardhearted

"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 cruel.

Other Word Forms

  • ruthlessly adverb
  • ruthlessness noun

Etymology

Origin of ruthless

First recorded in 1300–50; Middle English; ruth + -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.

To his critics, he was a ruthless autocrat who steered the nation on a path of societal and economic isolation.

From The Wall Street Journal

Samson toppled the pillars of the West Indies bowling attack in a methodical manner - expertly picking his moments to attack and increase the tempo of the chase with ruthless calculation.

From BBC

But the Shah was a problematic figure, obscene in his displays of wealth and ruthless in his suppression of dissent.

From The Wall Street Journal

Yet it’s a good time to revive a play about a ruthless leader who bamboozles the public while wreaking havoc on his government.

From Los Angeles Times

And nowhere is more ruthless than Red Bull.

From BBC