give the game away
US /ɡɪv ðə ɡeɪm əˈweɪ/
UK /ɡɪv ðə ɡeɪm əˈweɪ/

1.
membocorkan rahasia, mengungkapkan kejutan
to reveal a secret or surprise, often unintentionally
:
•
Don't give the game away by telling her about the surprise party.
Jangan membocorkan rahasia dengan memberitahunya tentang pesta kejutan.
•
His nervous laughter almost gave the game away.
Tawa gugupnya hampir membocorkan rahasia.