tight-lipped
tight-lipped /ˌtaɪt ˈlɪpt◂/
adjective
1. unwilling to talk about something:
Diplomats are remaining tight-lipped about the negotiations.
2. with your lips tightly pressed together because you are angry
tight-lipped /ˌtaɪt ˈlɪpt◂/
adjective1. unwilling to talk about something:
2. with your lips tightly pressed together because you are angry