the real McCoy

variants: also US

the McCoy

Definition of the real McCoy

informal

  1. :  something or someone that is real or genuine :  something or someone that is not a copy or imitation Is that a fake gun, or is it the real McCoy? These diamonds look like the real McCoy, but they could be fake. To help her play the role of a lawyer, the actress studied with the real McCoy.

Word by Word Definitions

realplay
  1. :  of or relating to fixed, permanent, or immovable things (such as lands or tenements)

    :  not artificial, fraudulent, or illusory :  genuine

    :  being precisely what the name implies

  1. :  a real thing

    :  a mathematically real quantity

  1. :  very, really

  1. :  a former monetary unit and coin of Spain and its possessions

  1. :  a former monetary unit and coin of Portugal


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