knock oneself out


: to cause oneself to become unconscious
He hit his head against the table when he fell and knocked himself out.
informal : to make oneself very tired by doing work
I knocked myself out to get the job done on time.
used to tell someone to go ahead and do something
"Do you mind if I use this exercise machine first?" "Knock yourself out."

Dictionary Entries Near knock oneself out

Cite this Entry

“Knock oneself out.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2023.

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