keep your cards close to your chest
US /kiːp jʊər kɑːrdz kloʊs tə jʊər tʃɛst/
UK /kiːp jʊər kɑːrdz kloʊs tə jʊər tʃɛst/
1.
to keep your plans, intentions, or feelings secret
:
•
She always keeps her cards close to her chest, so it's hard to know what she's thinking.
•
The company decided to keep its cards close to its chest about the new product launch.