secretive
/ˈsiːkrətɪv/adjective
1- (of a person or an organization) inclined to conceal feelings and intentions or not to disclose information（人, 组织）保密的; 守口如瓶的; 遮遮掩掩的：
she was very secretive about her past.
她对自己的过去讳莫如深。
1.1
- (of a state or activity) characterized by the concealment of intentions and information（状态, 活动）隐瞒的; 秘密的：
secretive deals.
秘密交易。
1.2
- (of a person's expression or manner) having an enigmatic or conspiratorial quality（人的表情, 举止）难解的; 诡秘的：
a secretive smile.
诡秘的微笑。
派生词
secretively
adverbsecretiveness
noun词源
mid 19th cent.: back-formation from secretiveness, suggested by French secrétivité, from secret 'secret'.