mercilessly
Americanadverb
-
without mercy, pity, or tolerance.
I was mercilessly bullied in school throughout my childhood.
Any speaker who goes on longer than 15 minutes will be interrupted mercilessly by the moderator.
-
without reprieve; unbearably.
An unusually humid July morning had morphed into a mercilessly hot afternoon.
Etymology
Origin of mercilessly
Explanation
To behave mercilessly is to act without showing pity or sympathy, like a bully who torments other kids or a basketball team that beats the opponent 125 – 0. Whenever possible, it’s best to avoid people who act mercilessly. When you show mercy, you're kind and empathetic. Without any mercy, you’re merciless, and when you act this way you act mercilessly. You show no pity! Some big brothers kid their little sisters mercilessly, and a judge who gives the maximum sentence for a minor crime has ruled mercilessly. Mercy is at the root of mercilessly, from the Old French merci, which means both "thanks" and "pity." If people act mercilessly, tell them thanks for nothing!
Vocabulary lists containing mercilessly
"Everyday Use" by Alice Walker
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Harry Potter and the Cursed Child
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The Boy in the Striped Pajamas
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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.
Brunson, hounded mercilessly by the Spurs, didn't make a basket until the second quarter.
From Barron's • Jun. 11, 2026
It has been a March Madness of the haves mercilessly thumping the have-nots.
From The Wall Street Journal • Mar. 23, 2026
Even that could not help Van Veen as Littler powered mercilessly on, with a final big finish to seal his latest success.
From BBC • Jan. 3, 2026
They previously had their romance thrown into the spotlight during the NFL Honors, when they were mercilessly roasted by rapper Snoop Dogg over their 48-year age gap.
From MarketWatch • Dec. 3, 2025
Eisman had invited the bullish-on-subprime Bear Stearns analyst Gyan Sinha to his office and grilled him so mercilessly that a Bear Stearns salesman had called afterward and complained.
From "The Big Short" by Michael Lewis
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.
