curve ball
Britishnoun
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baseball a ball pitched in a curving path so as to make it more difficult to hit
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informal something deceptive
his wholesome image was a curve ball thrown to deceive the public
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.