Meaning of the word "be under the impression" in English

What does "be under the impression" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

be under the impression

US /bi ˈʌndər ðə ɪmˈprɛʃən/
UK /bi ˈʌndə ðə ɪmˈprɛʃən/
"be under the impression" picture

Idiom

to believe that something is true when it is not

Example:
I was under the impression that the meeting was canceled.
He is under the impression that he can do whatever he wants.