know what hit one

Definition of know what hit one

  1. —used in negative statements to say that something one did not expect surprised one very much I didn't know what hit me—suddenly I just felt so dizzy. The company came out with an entirely new line of products last year, and their competitors never knew what hit them.

Word by Word Definitions

knowplay
  1. :  to perceive directly :  have direct cognition of

    :  to have understanding of

    :  to recognize the nature of :  discern

  1. :  knowledge

whatplay
  1. : used as an interrogative expressing inquiry about the identity, nature, or value of an object or matter

    : often used to ask for repetition of an utterance or part of an utterance not properly heard or understood

    :  who

  1. :  why

    :  in what respect :  how

  1. : used as an interrogative expressing inquiry about the identity, nature, or value of a person, object, or matter

    :  whatever

    :  any

  1. :  to reach with or as if with a sudden blow

    :  to come in quick forceful contact with

    :  to strike (something, such as a ball) with an object (such as a bat, club, or racket) so as to impart or redirect motion

  1. :  an act or instance of striking or forcefully coming in contact with someone or something :  an act or instance of hitting or being hit

    :  a stroke of luck

    :  a great success


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