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.
Related Stories Said to be the first book in a series, Little Hands watches as a young British woman with a mysterious past inadvertently joins a ruthless gang of female thieves who rob the ultra-wealthy along the French Riviera. Matt Grobar, Deadline, 9 June 2025 This is because the film, which Anderson both wrote (alongside Roman Coppola) and directed, centers on wealthy business tycoon Zsa-Zsa Korda (Benicio del Toro), who, thanks to his often ruthless deal-making, has become a frequent target of assassination attempts. EW.com, 6 June 2025 The process requires constant iteration and ruthless prioritization. Chris Venezia, Forbes.com, 6 June 2025 New threats emerge, including a ruthless new villain (Bill Skarsgård) and a blind assassin from Wick’s past, played by Donnie Yen in a standout performance. Emily Blackwood, People.com, 6 June 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 14 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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