under the impression

Idioms  

1. Thinking, assuming, or believing something, as in I was under the impression that they were coming today. This idiom often suggests that the idea or belief one had is mistaken. [Mid-1800s]

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Example Sentences

“I was under the impression that FTD was just kind of a fun ‘if you know, you know’ sort of thing,” Hardin said.

From Los Angeles Times • Jun. 26, 2026

He seems to think the assignment was to do a sort of Peter Sellers turn, as though under the impression that the project was a broad comedy like last year’s “Fackham Hall.”

From The Wall Street Journal • May 28, 2026

I was under the impression that a logical qubit had perfect fidelity.

From Barron's • May 21, 2026

Ms Robinson said they had been under the impression the law had been working to protect families since it was passed.

From BBC • Dec. 14, 2025

“That’s not my fault either. I didn’t invent it; I just bought a little of it while under the impression that the telegraph company would keep me informed as to what it was doing.”

From "The Sound and the Fury" by William Faulkner