ASSERTION Synonyms: 52 Similar and Opposite Words

assertion

noun

ə-ˈsər-shən

Definition of assertion

as in declaration

a solemn and often public declaration of the truth or existence of something the assertion that all men have certain unalienable rights is set forth in the Declaration of Independence

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Antonyms & Near Antonyms

as in argument

an idea or opinion that is put forth in a discussion or debate made the unlikely assertion that gravity affects light

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Example Sentences

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.

Recent Examples of assertion The Clippers’ assertion came after ESPN reported two key points regarding the NBA’s ongoing investigation into how Kawhi Leonard was compensated during his tenure with the team. — Michael McCann, Sportico.com, 20 Aug. 2026 Culture Minister Isaac Tchiakpé rejected RSF’s assertion that the filmmakers had received authorization from his ministry to carry out the documentary shoot. — ABC News, 20 Aug. 2026 Several days later, two lawyers issued a statement disputing that assertion. — Emily R. Condon, USA Today, 19 Aug. 2026 Contrary to Representative Gomez's assertion in his statement, his actions were not 'consensual in nature' with respect to our client. — Caitlin Yilek, CBS News, 19 Aug. 2026 See All Example Sentences for assertion

Recent Examples of Synonyms for assertion

Noun

Indiana's approval for a major disaster declaration came through earlier this week.

— Lauren Victory, CBS News, 28 Aug. 2026
Senate task force staff have a list of roughly 100 possible threats, including the prospect of a national election emergency declaration from the White House and the presence of federal troops and law enforcement at polling locations.

— Eric McDaniel, NPR, 28 Aug. 2026

Definition of declaration

Noun

This turns into a big argument about Issa being a weird little guy, and suddenly there are multiple potential roommate schisms in the house.

— Ben Rosenstock, Vulture, 28 Aug. 2026
Computer science emerged as a distinct academic discipline in the following decades, when the research traditions of math and engineering came together, and arguments about the nature of the new field soon followed.

— Ben Brubaker, Quanta Magazine, 28 Aug. 2026

Definition of argument

Noun

He was removed from the South Side church by an independent review board, and the archdiocese’s Office of Child Protection investigated the claims.

— Allison Kiehl, Chicago Tribune, 25 Aug. 2026
Asked to defend those claims on live TV, the candidate chose to talk ticket prices instead.

— Alejandro Avila OutKick, FOXNews.com, 25 Aug. 2026

Definition of claim

Noun

The Hawkeyes could be a good team but go 0-3 and see their CFP hopes dashed, but even one victory could keep them in Playoff contention.

— Scott Dochterman, New York Times, 26 Aug. 2026
That might be a problem for the Commanders because their contention is that these Redskins items are sold on a limited availability.

— Armando Salguero OutKick, FOXNews.com, 26 Aug. 2026

Definition of contention

Noun

Despite Bret’s passionate insistence that his classmate is a serial killer, Croft tells him Robert is a good kid from a good family and sends him back to class.

— Louis Peitzman, Vulture, 27 Aug. 2026
The right-wing theological website Protestia has attacked Hamilton for not heeding Paul’s insistence that women stay silent in church.

— Bill McKibben, New Yorker, 26 Aug. 2026

Definition of insistence

Noun

The federal case was based on allegations the social media giant misrepresented the extent of child mental health harms caused by apps like Facebook and Instagram.

— Leonie Kidd, CNBC, 27 Aug. 2026
Internet sleuths accused him of trying to improve his lie in the rough, similar to allegations against Bryson DeChambeau at the British Open last month.

— Kyle Feldscher, CNN Money, 27 Aug. 2026

Definition of allegation

Browse Nearby Words

asserting

assertion

assertions

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Style

“Assertion.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assertion. Accessed 1 Sep. 2026.

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Synonyms of assertion

noun

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