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

1.
كشف السر, أفشى السر
to reveal a secret or surprise, often unintentionally
:
•
Don't give the game away by telling her about the surprise party.
لا تكشف السر بإخبارها عن الحفلة المفاجئة.
•
His nervous laughter almost gave the game away.
ضحكته العصبية كادت أن تكشف السر.