work your arse off
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work (one's) arse off
rude slang To work really hard (on or at something). Primarily heard in UK. I know you thought it was just a silly New Year's resolution, but I've been working my arse off at the gym! Sally and Jim work their arses off when we hold our consumer conference each year. I don't know what I'd do without them!
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
work your arse offBRITISH, VERY RUDE or
work your ass offAMERICAN, RUDE
If you work your arse off, you work very hard. He's working his arse off to make the shop his triumph. I'm working my ass off to get to where I need to be.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
work your ˈarse off(British English) (American English work your ˈass off) (taboo, slang) work very hard
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