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non aveva idea di

had no idea about

→ non
phrase Rare #34,330
had no idea about Used to say someone did not know something at all. It is often followed by a question word or a noun phrase introduced by di.
IT: Tom non aveva idea di chi foste.
EN: Tom had no idea who you were.

Tom non aveva idea di quando sarebbe arrivata Mary.

Tom had no idea when Mary would arrive.

Non aveva idea di che cosa fosse accaduto.

He had no idea what had happened.

Tom non aveva idea di cosa fare.

Tom had no idea what to do.

Tom non aveva idea di quello di cui stava parlando.

Tom had no idea what he was talking about.

Tom non aveva idea di chi foste.

Tom had no idea who you were.