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
Of greatest concern was their assertion that Volvo Trucks will not be producing autonomy-ready trucks starting in 2027 as has been stated by both companies.
—
Richard Bishop, Forbes.com, 30 May 2025
The memorandum also points out that hearsay—meaning a statement made out-of-court used to prove the truth of an assertion—may be considered in opposing a motion for summary judgment.
—Michael McCann, Sportico.com, 29 May 2025
But vaccine experts say such an assertion isn’t supported by evidence, and OB-GYNs quickly raised alarms over patient access to the vaccine.
—Elizabeth Robinson, NBC news, 29 May 2025
For investors, though, the big question is whether Della Valle’s assertion last week of an inflexion point is justified.
—Ian King, CNBC, 28 May 2025
See All Example Sentences for assertion
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Richard Bishop, Forbes.com, 30 May 2025
The memorandum also points out that hearsay—meaning a statement made out-of-court used to prove the truth of an assertion—may be considered in opposing a motion for summary judgment.
—Michael McCann, Sportico.com, 29 May 2025
But vaccine experts say such an assertion isn’t supported by evidence, and OB-GYNs quickly raised alarms over patient access to the vaccine.
—Elizabeth Robinson, NBC news, 29 May 2025
For investors, though, the big question is whether Della Valle’s assertion last week of an inflexion point is justified.
—Ian King, CNBC, 28 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 5 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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