knock oneself out

Definition of knock oneself out

  1. 1 :  to cause oneself to become unconscious He hit his head against the table when he fell and knocked himself out.

  2. 2 informal :  to make oneself very tired by doing work I knocked myself out to get the job done on time.

  3. 3 US —used to tell someone to go ahead and do something “Do you mind if I use this exercise machine first?” “Knock yourself out.”

Word by Word Definitions

  1. :  to strike something with a sharp blow

    :  to collide with something

    :  bustle

  1. :  a sharp blow :  rap, hit

    :  a severe misfortune or hardship

    :  setback, reversal

  1. :  one's normal, healthy, or sane condition or self

  1. :  in a direction away from the inside or center

    :  outside

    :  from among others

  1. :  eject, oust

    :  to identify publicly as being such secretly

    :  to identify as being a closet homosexual

  1. : used as a function word to indicate an outward movement

  1. :  situated outside :  external

    :  out-of-bounds

    :  situated at a distance :  outlying

  1. :  outside

    :  one who is out of office or power or on the outside

    :  an act or instance of putting a player out or of being put out in baseball

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