sit on → είμαι μέλος επιτροπής, βάζω στη θέση του κάποιον, σνομπάρω, ερευνώ αίτια θανάτουIf you say that someone is sitting on something, you mean that they are delaying dealing with it.
https://www.collinsdictionary.com/dictionary/english/sit-onsit on
The cat sat on the mat.
(idiomatic) To block, suppress, restrain.
The chairman sat on the report until the end of the legislative session.
(idiomatic, informal) To restrain (a person).
He started to act up, but she sat on him.
(idiomatic) To take no action on.
I sent the boss my proposal three weeks ago and he's been just sitting on it.
To be a member of.
He sits on the appropriations committee.
To hold an official inquiry regarding; to deliberate about.
To have but not actively use
sit on - Wiktionarysit on someone
Subdue someone, typically by saying something intended to make them uneasy or embarrassed.
‘someone should have sat on him when he was young’
SIT ON English Definition and Meaning | Lexico.comsit on
1: to hold deliberations concerning
2: REPRESS, SQUELCH
3: to delay action or decision concerning
4: to wait or be ready for (a specific pitch) in baseball
Sit on Definition & Meaning - Merriam-WebsterTranslation blunder: she's going to sit on you → θα κάτσει πάνω σου