Definition of give the whole game or show away in English:

give the (whole) game (or show) away

Inadvertently reveal something secret or concealed.
More example sentences
  • They gave the game away last year when the Government suggested church schools educate more children who are in care, and they recoiled in horror.
  • I'll not give the game away but lets just say a game of cat and mouse was had and the cat won it.
  • There is a particular shot in every trailer I've seen of this movie that gives the game away completely.
See parent entry: give

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Word of the day retroflex
Pronunciation: ˈretrəˌfleks
adjective
turned backward