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

See Examples For:

under the impression

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

They were under the impression that they would have a chance to formally pitch for the mandate after discussions with U.S. officials.

From The Wall Street Journal ● May 26, 2026

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

From Barron's ● May 21, 2026

She claimed that she was mistakenly under the impression that her case would then be sent to appeal and noted that she has the documented verbal comprehension of a second-grader.

From Los Angeles Times ● Mar. 31, 2026

Benton was still talking loudly and slowly, under the impression that he could be understood better if he spoke in this manner.

From "Where Things Come Back" by John Corey Whaley