assertion
noun
as·ser·tion
ə-ˈsər-shən 
a-
: the act of asserting or something that is asserted: such as
a
: insistent and positive affirming, maintaining, or defending (as of a right or attribute)
an assertion of ownership/innocence
b
: a declaration that something is the case
He presented no evidence to support his assertions.
Examples of assertion in a Sentence
the assertion that all men have certain unalienable rights is set forth in the Declaration of Independence
made the unlikely assertion that gravity affects light
Recent Examples on the Web
Then-Media School Dean James Shanahan rebutted the assertion, saying the school had never sought to influence the paper's content.
—
Cate Charron, IndyStar, 14 Oct. 2025
The site, with its grand plaza, was conceived as an assertion of civic pride under the lingering cloud of a presidential assassination perpetrated on the city's watch.
—Marc Ramirez, USA Today, 13 Oct. 2025
To help her students investigate this assertion, Rovito designed an in-class activity that invites them to become more than a student of history.
—JSTOR Daily, 11 Oct. 2025
What is the most confounding and terrible, however, is Gretchen’s assertion that Slade, the anti-Viagra, doesn’t get involved with the women on his own accord, but only engages because the women always talk about him.
—Brian Moylan, Vulture, 10 Oct. 2025
See All Example Sentences for assertion
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Cate Charron, IndyStar, 14 Oct. 2025
The site, with its grand plaza, was conceived as an assertion of civic pride under the lingering cloud of a presidential assassination perpetrated on the city's watch.
—Marc Ramirez, USA Today, 13 Oct. 2025
To help her students investigate this assertion, Rovito designed an in-class activity that invites them to become more than a student of history.
—JSTOR Daily, 11 Oct. 2025
What is the most confounding and terrible, however, is Gretchen’s assertion that Slade, the anti-Viagra, doesn’t get involved with the women on his own accord, but only engages because the women always talk about him.
—Brian Moylan, Vulture, 10 Oct. 2025
See All Example Sentences for assertion
Cite this Entry
“Assertion.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/assertion. Accessed 19 Oct. 2025.
Copy CitationKids Definition
assertion
noun
as·ser·tion
ə-ˈsər-shən
a-
: the act of asserting
also
: something asserted : declaration
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