ruthless
Americanadjective
adjective
Synonym Usage
See cruel.
Other Word Forms
Derived 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
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
Negative Words to Describe a Person
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
The Things They Carried
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
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.
According to the film’s logline, Kara’s encounter with “an unexpected and ruthless adversary” leads her to “reluctantly join forces with an unlikely companion on an epic, interstellar journey of vengeance and justice.”
From Los Angeles Times • Jun. 9, 2026
This time around England were ruthless when they got themselves into a strong position, their spinners building dot-ball pressure and the lack of scoring opportunities scrambling the minds of the Kiwi batters.
From BBC • May 25, 2026
Czesław is an ethnic Pole in the Red Army who escaped a ruthless German ambush.
From The Wall Street Journal • May 22, 2026
The “Five-Dollar Day”—part publicity stunt, part ruthless business tactic—jump-started a consumer revolution that drove the U.S. economy to 20th-century global dominance and still powers it today.
From Barron's • May 20, 2026
Yet from time to time Arawn sends certain of them outside Annuvin to perform his most ruthless tasks.
From "The Book of Three" by Lloyd Alexander
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.
