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assumption

noun B2 Neutral

Meaning

An assumption is something that is accepted as true or as certain to happen, without proof or evidence.
💡 Be careful not to confuse "assumption" with "presumption," as the latter implies a stronger basis for belief.

Example Sentences

I made an assumption about the meeting time yesterday .
The project failed because of a wrong assumption about costs .
What is the assumption behind your idea ?

Word in Context

Sarah was waiting at the caf é because she thought Mark would arrive at nine . When he finally came , he seemed calm but a little out of breath . The assumption that he had been stuck in traffic was reasonable , so she didn't complain . He explained that his bus had been delayed and apologized for making her wait . They ordered coffee and started talking about their week .

Common Phrases

make an assumption challenge an assumption underlying assumption

Synonyms

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