one's ass off
idiom
chiefly US, informal
: very hard
This comedian will make you laugh your ass off.
The people in the back were working their asses off.
Cite this Entry
“One's ass off.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/one%27s%20ass%20off. Accessed 30 Oct. 2025.
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