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 OutKick asked Prime to explain the reporting behind its commentators' assertions and account for its handling of the Fever's statement. — Dan Zaksheske Outkick, FOXNews.com, 30 Sep. 2026 In the case of Aries, for instance, this Fire sign has everything to do with individuality, assertion and the raw instinct to act on one’s desires. — Valerie Mesa, PEOPLE, 26 Sep. 2026 Revealing documents from Jones’ litigation previously became central to Lively’s own assertions in court. — Gary Baum, HollywoodReporter, 25 Sep. 2026 Pause for a moment to reflect on how outrageous this assertion is. — Quanta Magazine, 25 Sep. 2026 See All Example Sentences for assertion

Recent Examples of Synonyms for assertion

Noun

In a rare sign of unity within Kosovo's fractured legislative assembly, lawmakers earlier this week unanimously condemned the war crimes verdicts in a declaration.

— Arkansas Online, Arkansas Online, 2 Oct. 2026
The lawsuit says the Pentagon used an emergency declaration to bypass notice requirements, as some affected voters prepare to cast ballots in November.

— Nicholas Riccardi, Los Angeles Times, 2 Oct. 2026

Definition of declaration

Noun

The lawsuit said Bakker and a guest made the cure claim during 11 episodes in February and March 2020.

— Arkansas Online, Arkansas Online, 7 Oct. 2026
Some defendants face additional allegations involving false claims of citizenship or fraudulent statements that rest on separate federal statutes.

— Antonio María Delgado, Miami Herald, 6 Oct. 2026

Definition of claim

Noun

As Florida continues its ascent back into the image of CFP contention, its ability to focus on the next test was the new challenge.

— Noah White, Miami Herald, 4 Oct. 2026
But — like the announcement of the city’s bounce from Olympic contention — the festival fizzled.

— Kori Rumore, Chicago Tribune, 4 Oct. 2026

Definition of contention

Noun

One is reminded of Toni Morrison, whose refusal to pander to the dominant gaze — whose insistence on writing about Black characters without regard for whoever else might be reading — unlocked its own kind of universality.

— Sam Worley, Vulture, 5 Oct. 2026
Trump’s insistence on including certain details regarding Iran’s nuclear weapons program has emerged as a pressure point in negotiations, as have various ways to fully reopen the Strait of Hormuz and thus bring down global oil prices.

— Carter Schroppe, The Washington Examiner, 3 Oct. 2026

Definition of insistence

Noun

Among the results claimed are a solution to the four-dimensional Kakeya conjecture, improvements on some of the world’s most important computer algorithms, and actual progress toward math’s scariest problem, the Riemann hypothesis.

— Joseph Howlett, Scientific American, 6 Oct. 2026
The corroded terminal, the location, 30 seconds of video of the noise, the hypothesis that was ruled out.

— Julien Vantyghem, Forbes.com, 5 Oct. 2026

Definition of hypothesis

Noun

The governor, Kathy Hochul, has called for an independent review of Cornell’s response to Jane Doe’s allegations.

— Jessica Winter, New Yorker, 1 Oct. 2026
The allegations against Ross raised in the affidavit appear to align with claims his ex-girlfriend, influencer Jazzma Kendrick, levied against the rapper.

— Alexandra Del Rosario, Los Angeles Times, 1 Oct. 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 9 Oct. 2026.

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Synonyms of assertion

noun

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