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
His lawyers have vehemently pushed back on that assertion.
—
Hira Humayun, CNN Money, 11 July 2025
This assertion adds another dimension to the ongoing tensions between Tehran and Washington.
—Amir Daftari, MSNBC Newsweek, 7 July 2025
Less than 2% of data assertions sent to UMA are disputed, according to blockchain data, yet high-stakes disputes can expose systemic vulnerabilities.
—Boaz Sobrado, Forbes.com, 7 July 2025
On the other hand, Powell’s assertions have not sat well with Trump, who has continued to harangue him to lower interest rates.
—Rob Wile, NBC news, 3 July 2025
See All Example Sentences for assertion
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Hira Humayun, CNN Money, 11 July 2025
This assertion adds another dimension to the ongoing tensions between Tehran and Washington.
—Amir Daftari, MSNBC Newsweek, 7 July 2025
Less than 2% of data assertions sent to UMA are disputed, according to blockchain data, yet high-stakes disputes can expose systemic vulnerabilities.
—Boaz Sobrado, Forbes.com, 7 July 2025
On the other hand, Powell’s assertions have not sat well with Trump, who has continued to harangue him to lower interest rates.
—Rob Wile, NBC news, 3 July 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 29 Jul. 2025.
Copy CitationKids Definition
assertion
noun
as·ser·tion
ə-ˈsər-shən
a-
: the act of asserting
also
: something asserted : declaration
Love words? Need even more definitions?
Merriam-Webster unabridged
Share