come out of the closet

US /kʌm aʊt əv ðə ˈklɑːzɪt/
UK /kʌm aʊt əv ðə ˈklɑːzɪt/
"come out of the closet" picture
1.

to openly declare one's sexual orientation or gender identity, especially when it is not heterosexual or cisgender

:
After years of hiding, he finally decided to come out of the closet to his family.
It takes a lot of courage to come out of the closet.
2.

to reveal a secret or something previously hidden

:
The truth about the scandal finally came out of the closet.
Many old family secrets came out of the closet during the reunion.