tight-lipped 
adjective
With the lips firmly closed, especially as a sign of suppressed emotion or determined reticence: she stayed tight-lipped and shook her head...
- I had hoped many tight-lipped elite military officers would speak sincerely about their role in the riots.
- In consequence we are becoming a tight-lipped silent majority afraid to rise above the parapet.
- As with his magic secrets Gold remains tight-lipped about his next venture.
Synonyms
reticent, taciturn, uncommunicative, unforthcoming, unresponsive, close-mouthed, close-lipped;
silent, quiet, unspeaking;
guarded, secretive, private, withdrawn, playing one's cards close to one's chest, of few words, untalkative
informal mum
- Velde, Willem van de
- veldskoen
- veldt
- veleta
- veliger
- Veliote
- velitation
- velleity
- Velleius Paterculus
- vellum
- velocimeter
- velocimetry
- velocipede
- velocipedist
- velociraptor
- velocity
- velocity of circulation
- velocity profile
- omni-antenna
- omniarch
- omnibenevolence
- omnibenevolent
- omnibus
- omnibus box
- omnibus letter