assume.
To authenticate by means of belief; to surmise; to suppose to be true, especially without proof.
Meaning & usage
To authenticate by means of belief; to surmise; to suppose to be true, especially without proof.
We assume that, as her parents were dentists, she knows quite a bit about dentistry.
To take on a position, duty or form.
Mr. Jones will assume the position of a lifeguard until a proper replacement is found.
To adopt a feigned quality or manner; to claim without right; to arrogate.
He assumed an air of indifference.
To receive, adopt (a person).
To adopt (an idea or cause).
Where this word comes from
From Latin assūmō (“accept, take”), from ad- (“to, towards, at”) + sūmō (“take up, assume”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.