work (one's) butt off

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work (one's) butt off

To work really hard (on or at something). I know you thought it was just a silly New Year's resolution, but I've been working my butt off at the gym! Sally and Jim work their butts off when we hold our consumer conference each year. I don't know what I'd do without them!
See also: butt, off, work
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

work one’s butt off

verb
See also: butt, off, work
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
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