I was under the impression that the meeting was at 2 pm.
under the impression
Frequency:
75
%
He was under the impression that she was still upset with him.
under the impression
Frequency:
60
%
They were under the impression that the project deadline had been extended.
Idiomatic Expressions for under the impression
Phrase: under the false impression
Meaning: To believe something to be true that is actually incorrect or untrue.
Usage: I was under the false impression that she was mad at me, but it turns out she was just busy.