secretive
US /ˈsiː.krə.t̬ɪv/
UK /ˈsiː.krə.t̬ɪv/

1.
守口如瓶的, 遮遮掩掩的
inclined to conceal feelings and intentions or not to disclose information
:
•
She's very secretive about her past.
她对自己的过去非常保密。
•
The government was accused of being secretive about the new policy.
政府被指责对新政策遮遮掩掩。