under the impression

Falsely assuming something

Under the impression means believing something to be true, often mistakenly: I was under the impression we were meeting at noon.

The phrase typically signals that one's belief was or may be wrong—you wouldn't say you were under the impression the sky is blue.

It softens contradiction: I was under the impression you'd already been paid politely suggests someone may be lying or mistaken.

Related

wrong idea · miscommunication · lost in translation · belief · doubt · conjecture · rumor · supposition · taken for granted · perception · confusion · inference · hearsay · bad information · trust · interpretation · persuasion · expectation

Opposites
certainty of belief

under the impressionunsure

Lacking confidence or certainty

doubtful · uncertain · skeptical · wondering · questioning

epistemic status

under the impressionknow for a fact

Have verified knowledge

certain · sure · well-informed · cognizant · disabused

awareness/information state

under the impressionin the dark

Uninformed about something

clueless · uninformed · unaware · oblivious · ignorant

Family

under, impression, impress, impressed, impressing, impressive, impressively, impressionable, impressionism

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G