give the game away

US /ɡɪv ðə ɡeɪm əˈweɪ/
UK /ɡɪv ðə ɡeɪm əˈweɪ/
"give the game away" picture
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.