open secret

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

rahasia umum

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.
Ini adalah rahasia umum bahwa mereka berencana untuk menikah.
His affair with his assistant was an open secret in the office.
Perselingkuhannya dengan asistennya adalah rahasia umum di kantor.