closeted

adjective4

1. •
   Not open about one's sexual orientation, romantic orientation, or gender identity.

   • Sally Gearhart, an ex-christian from Illinois who in the early seventies abandoned closeted lesbianism on Midwestern church college faculties for radical feminism in San Francisco, — 1979
2. •
   Not open about some aspect of one's identity, tendency, or fondness; secret.

   • […] the remaining quotations, chiefly from English poetry, interested me only slightly more. They were the elegiac favourites of a closeted Romantic. — 1971
3. •
   Confined.

   • He's spent all day closeted in his room.
4. •
   sheltered; protected.