up to no good
IdiomsExample Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
They say they knew the cheating team had been up to no good for "ages".
From BBC • Nov. 14, 2025
I feel like Monkey's always up to no good.
From Salon • Feb. 2, 2024
The Georgia legislature recognized that people who are up to no good can abuse our citizens’ security and the public order just as gravely while wearing a business suit.
From Slate • Aug. 15, 2023
“But to them it’s suspicious that you’re up to no good or you’re doing something that you shouldn’t be doing.”
From Los Angeles Times • Jul. 5, 2023
Doesn’t have his running lights on, so I know he’s up to no good.
From "The Young Man and the Sea" by Rodman Philbrick
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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.