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
Under Pennsylvania law, Clary must allege specifics about the supposedly defamatory words, including the speaker, the date, to whom the statement was made and an assertion the statement was, in fact, false.
—
Michael McCann, Sportico.com, 11 June 2025
Read or listen to the story » Editor’s Pick
Photograph by Spencer Platt / Getty
Looking for the National Guard in Los Angeles
President Trump’s assertions that federal troops have saved the city from destruction did not appear to reflect reality, Emily Witt reports from on the ground in L.A.
—Eyal Press, New Yorker, 11 June 2025
More Win McNamee/Getty Images At a Capitol news conference, House Speaker Mike Johnson declined to weigh in on Trump's assertion that California Gov. Gavin Newsom should be arrested but made his own strong statement.
—Amanda Castro
hannah Parry, MSNBC Newsweek, 10 June 2025
Meiner has characterized the relocation of homeless individuals to Bikini Hostel as retribution for the commission’s decision to rescind the ballot initiative, an assertion the Trust rejects.
—Max Klaver, Miami Herald, 10 June 2025
See All Example Sentences for assertion
Examples are automatically compiled from online sources to
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Michael McCann, Sportico.com, 11 June 2025
Read or listen to the story » Editor’s Pick
Photograph by Spencer Platt / Getty
Looking for the National Guard in Los Angeles
President Trump’s assertions that federal troops have saved the city from destruction did not appear to reflect reality, Emily Witt reports from on the ground in L.A.
—Eyal Press, New Yorker, 11 June 2025
More Win McNamee/Getty Images At a Capitol news conference, House Speaker Mike Johnson declined to weigh in on Trump's assertion that California Gov. Gavin Newsom should be arrested but made his own strong statement.
—Amanda Castro
hannah Parry, MSNBC Newsweek, 10 June 2025
Meiner has characterized the relocation of homeless individuals to Bikini Hostel as retribution for the commission’s decision to rescind the ballot initiative, an assertion the Trust rejects.
—Max Klaver, Miami Herald, 10 June 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 17 Jun. 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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