assert.
To declare with assurance or plainly and strongly; to state positively.
Meaning & usage
To declare with assurance or plainly and strongly; to state positively.
He would often assert that there was life on other planets.
To use or exercise and thereby prove the existence of.
Salman Rushdie has asserted his right to be identified as the author of this work.
To maintain or defend, as a cause or a claim, by words or measures; to vindicate a claim or title to.
To insist on the legitimacy of one's rights, opinion, etc; not to allow oneself to be dismissed; to ensure that one is taken into consideration; to make oneself respected; to be assertive. See assert oneself.
Since going to therapy, I've found it much easier to assert myself.
To declare that a condition or expression must be true at a certain point in the source code (in some cases causing the program to fail if it is not, as a safeguard).
To set a signal on a line using a voltage or electric current.
Where this word comes from
From Latin assertus, perfect passive participle of asserō (“declare someone free or a slave by laying hands upon him; hence free from, protect, defend; lay claim to, assert, declare”), from ad (“to”) + serō (“join, range in a row”).
Synonym of assertion.
Where this word comes from
From Latin assertus, perfect passive participle of asserō (“declare someone free or a slave by laying hands upon him; hence free from, protect, defend; lay claim to, assert, declare”), from ad (“to”) + serō (“join, range in a row”).
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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.