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
This assertion is now bearing out, to some degree, much to the anti-vaccine community's chagrin.
—
David Oliver, USA Today, 7 Apr. 2025
In conversation, de Moraes often veers between jokes and brusque legal assertions.
—Jon Lee Anderson, New Yorker, 7 Apr. 2025
The Big Story Congress pushes back as Trump snubs Signal chat
The White House’s assertion that the case surrounding national security officials’ use of Signal is closed is getting pushback in Congress, even among some Republicans who say their own probes will press on.
—Julia Shapero, The Hill, 7 Apr. 2025
Some weeks later, Fonda would repeat these assertions, word for word, at a press conference at the Lima airport, as the commission arrived in Peru to begin its investigation.
—Wade Davis, Rolling Stone, 6 Apr. 2025
See All Example Sentences for assertion
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David Oliver, USA Today, 7 Apr. 2025
In conversation, de Moraes often veers between jokes and brusque legal assertions.
—Jon Lee Anderson, New Yorker, 7 Apr. 2025
The Big Story Congress pushes back as Trump snubs Signal chat
The White House’s assertion that the case surrounding national security officials’ use of Signal is closed is getting pushback in Congress, even among some Republicans who say their own probes will press on.
—Julia Shapero, The Hill, 7 Apr. 2025
Some weeks later, Fonda would repeat these assertions, word for word, at a press conference at the Lima airport, as the commission arrived in Peru to begin its investigation.
—Wade Davis, Rolling Stone, 6 Apr. 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 21 Apr. 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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