Meaning : Refrain from divulging sensitive information. Keep quiet about confidential information.
Example :
Don't tell him any secrets--he cannot keep his mouth shut!.
Synonyms : keep quiet, shut one's mouth
Divulge confidential information or secrets.
Be careful--his secretary talks.Keep one's mouth shut ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Keep one's mouth shut ka matlab kya hota hai?