tight-lipped
adjective /ˌtaɪt ˈlɪpt/
/ˌtaɪt ˈlɪpt/
- not willing to talk about something
- Despite the rumours, government officials remained tight-lipped today.
- keeping your lips pressed together, especially because you are angry about something
- He marched out of the room tight-lipped and white-faced.
- a tight-lipped reply