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kick-ass

American  
[kik-as] / ˈkɪkˌæs /
Or kickass

adjective

Slang.

  1. strikingly or overwhelmingly tough, aggressive, powerful, or effective.

    He finally built himself a kick-ass computer.
kick ass British  

verb

  1. to be impressive, esp in a forceful way

    pop music that kicks ass
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. forceful, aggressive, and impressive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
kick ass Idioms  

  1. Also, kick butt. Punish or discipline harshly; also, defeat soundly. For example, That foreman's furious; he's going to kick ass before the day is over, or Our team is out to kick butt today. [Vulgar slang; 1940s]

Etymology

Origin of kick-ass

kick + -ass

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.