ruthless
Americanadjective
adjective
Synonym Usage
See cruel.
Other Word Forms
Etymology
Origin of ruthless
Explanation
Ruthless means showing no mercy or compassion. If you really want to cut down on the clutter in your apartment, you can't be sentimental about keepsakes. You have to be ruthless and throw out everything that's not absolutely essential. If you're ruthless, you're the polar opposite of Mother Theresa. You get called heartless and cold-blooded. That's one of the reasons the word crops up so often to describe dictators and tyrants, though it can also apply to other personality types — like corporate raiders and colleagues so success-driven that they'll gladly steamroll anyone to get ahead. It finds its way into milder contexts, too: Just be ruthless and rip off the Band-Aid already!
Vocabulary lists containing ruthless
Anti-Antonyms: Words Without Opposites
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Negative Words to Describe a Person
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The Things They Carried
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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.
The big reveal in the opening of the film—which rivals a James Bond pre-credit sequence in longevity, action and skiing through the Alps—is that the ruthless assassin ruining everyone’s Austrian vacation is a woman.
From The Wall Street Journal ● Jul. 14, 2026
Haaland is the leader for ruthless efficiency, all facets that feed into a race that could be decided by the smallest detail.
From BBC ● Jul. 8, 2026
He’s refreshingly optimistic about challenging music in streaming’s ruthless economy.
From Los Angeles Times ● Jul. 3, 2026
You could call that ruthless economic warfare, or you could call it capitalist competition, an arena where the Chinese have excelled.
From Salon ● Jun. 21, 2026
This was the most powerful man in the world, and, some said, the most ruthless and intolerant.
From "Tiger, Tiger" by Lynne Reid Banks
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
