ruthless

adjective

ruth·​less ˈrüth-ləs How to pronounce ruthless (audio)
 also  ˈru̇th-
: having no pity : merciless, cruel
a ruthless tyrant
ruthlessly adverb
ruthlessness noun

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."

Examples of ruthless in a Sentence

The journalist was ruthless in his criticism. an office supervisor with a ruthless disregard for others' feelings
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The ruthless, physical Panthers will get a strong Oilers squad, with Ekholm back on the back end, Skinner emphatically taking back his net from Calvin Pickard, and both McDavid and Leon Draisaitl on top of their games. Daniel Nugent-Bowman, New York Times, 30 May 2025 As with everything Banksy, siting and context are chief among the avenues of investigation into the man’s intent and into his his hilariously ruthless nocturnal execution of his art. Guy Martin, Forbes.com, 30 May 2025 Advertisement Advertisement The first season largely follows Department Q on its first case, searching for Merritt Lingard (Chloe Pirrie), a ruthless and highly successful prosecutor who has been missing for four years, last seen on a ferry headed to the remote Mhor in the Scottish Highlands. Barry Levitt, Time, 29 May 2025 And yet, this authentic and downbeat immigrant drama questions what luck means in a ruthless, dog-eat-dog city where only the strongest survive. Jordan Mintzer, HollywoodReporter, 27 May 2025 See All Example Sentences for ruthless

Word History

First Known Use

14th century, 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 3 Jun. 2025.

Kids Definition

ruthless

adjective
ruth·​less ˈrüth-ləs How to pronounce ruthless (audio)
: having no pity : merciless, cruel
ruthlessly adverb
ruthlessness noun

More from Merriam-Webster on ruthless

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