keep cards close to chest

keep/play your cards close to your chest

to not tell anyone what you plan to do I never know what Martin's next move will be. He plays his cards close to his chest.

Name	Pronounced	Usage
Thiago	-	Portuguese (Brazilian)
Grigor	-	Welsh, Bulgarian, Macedonian, Armenian
Sassa	-	Swedish
Ashok	-	Indian, Hindi, Marathi, Bengali, Gujarati, Kannada, Tamil, Telugu, Nepali
Philemon	fi-LEE-mən (English), fie-LEE-mən (English)	Biblical, Biblical Latin, Biblical Greek
Kayden	KAY-dən	English (Modern)