open secret

US /ˈoʊpən ˈsiːkrət/
UK /ˈoʊpən ˈsiːkrət/
"open secret" picture
1.

açık sır

a fact that is supposed to be secret but is actually known by many people

:
It's an open secret that they are planning to get married.
Evlenmeyi planladıkları bir açık sır.
His affair with his assistant was an open secret in the office.
Asistanıyla olan ilişkisi ofiste bir açık sırdı.