ruthless

1 of 2

adjective

Synonyms of ruthless
: having no pity : merciless, cruel
a ruthless tyrant
ruthlessly adverb
ruthlessness noun

ruthlessness

2 of 2

noun

ruth·​less·​ness
plural -es
: the quality or state of being ruthless

Did you know?

If someone can be ruthless, can one also be ruthful?

Ruthless can be defined as "without ruth" or "having no ruth." So what, then, is ruth? The noun ruth, which is now considerably less common than ruthless, means "compassion for the misery of another," "sorrow for one's own faults," or "remorse." And, just as it is possible for one to be without ruth, it is also possible to be full of ruth. The antonym of ruthless is ruthful, meaning "full of ruth" or "tender." Ruthful can also mean "full of sorrow" or "causing sorrow." Ruth can be traced back to the Middle English noun ruthe, itself from ruen, meaning "to rue" or "to feel regret, remorse, or sorrow."

Synonyms of ruthless

Examples of ruthless in a Sentence

Adjective The journalist was ruthless in his criticism. an office supervisor with a ruthless disregard for others' feelings
Recent Examples on the Web
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Adjective
He was always destined to follow in the footsteps of another tyrannical, ruthless Don – Michael Corleone. Aramide Tinubu, Variety, 3 Sep. 2026 Ink finds the Sinners star playing ruthless tabloid editor Larry Lamb in Boyle’s retelling of what happened when Rupert Murdoch acquired struggling British newspaper The Sun. Chris Gardner, HollywoodReporter, 3 Sep. 2026 Not through longer onboarding or more certification modules, but through ruthless focus on exactly what a rep needs to win their first deal. Doug May, Forbes.com, 2 Sep. 2026 As Russia’s ground offensive stalls, European officials warn the air war is growing more ruthless while Ukraine hits Russia’s Ust-Luga oil port and India’s leader presses publicly for an end to fighting. Samya Kullab, Los Angeles Times, 1 Sep. 2026 See All Example Sentences for ruthless

Word History

Etymology

Adjective

Middle English rewthles, routheeles, from rewthe, routhe "pity, ruth" + -les -less

First Known Use

Adjective

14th century, in the meaning defined above

Noun

1777, in the meaning defined above

Time Traveler
The first known use of ruthless was in the 14th century

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Cite this Entry

“Ruthless.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruthless. Accessed 6 Sep. 2026.

Kids Definition

ruthless

adjective
: having no pity : merciless, cruel
ruthlessly adverb
ruthlessness noun
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