assumption

Definitions

A thing that is accepted as true or as certain to happen, without proof.

The action of taking or beginning to take power or responsibility.

Examples

It is a common assumption that hard work always leads to success.

We should not base our final decision on a mere assumption without checking the facts.

Synonyms

presumption supposition premise hypothesis conjecture postulate surmise

Antonyms

fact certainty reality proof truth verification demonstration