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
Some of the assertions have generated confusion, leaving key U.S. tax concepts insufficiently addressed.
—
Virginia La Torre Jeker, Forbes.com, 17 May 2025
The police verified Jenna’s assertion that the tank had been empty all along, but for some reason, no one had thought to check whether the valve had been opened.
—Max Gao, Variety, 16 May 2025
This time around, immigration officials and the Trump White House have insisted Abrego Garcia deserved his fate, sliming him as a terrorist and MS-13 member despite no evidence to back up their assertions.
—Gustavo Arellano, Los Angeles Times, 14 May 2025
Committee Chair Bill Cassidy, R-La., who hadn't been in the room when Kennedy made that assertion, later paused the hearing to correct the health secretary.
—Megan Lebowitz, NBC news, 14 May 2025
See All Example Sentences for assertion
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Virginia La Torre Jeker, Forbes.com, 17 May 2025
The police verified Jenna’s assertion that the tank had been empty all along, but for some reason, no one had thought to check whether the valve had been opened.
—Max Gao, Variety, 16 May 2025
This time around, immigration officials and the Trump White House have insisted Abrego Garcia deserved his fate, sliming him as a terrorist and MS-13 member despite no evidence to back up their assertions.
—Gustavo Arellano, Los Angeles Times, 14 May 2025
Committee Chair Bill Cassidy, R-La., who hadn't been in the room when Kennedy made that assertion, later paused the hearing to correct the health secretary.
—Megan Lebowitz, NBC news, 14 May 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 24 May. 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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