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 Whatever its stated purpose, the assertion seemed designed to cast a pall on the elections four months hence. — James Robenalt, Vanity Fair, 27 July 2026 But authorities boast that the state has lately become a model for reducing mob mayhem — an assertion that many find suspect. — Los Angeles Times, 26 July 2026 Mexican health authorities, meanwhile, have also said there has not yet been ample evidence to support the FDA's assertion that the outbreak originated over the border, as reported by USA TODAY. — Sara Moniuszko, USA Today, 24 July 2026 Attorney Taylor Meehan, representing Tennessee election officials, rejected the assertion of racially discriminatory motivations. — ABC News, 23 July 2026 See All Example Sentences for assertion

Recent Examples of Synonyms for assertion

Noun

In Rome, Maria Ressa, a 2021 Nobel Peace Prize laureate and a co-rapporteur for the declaration, said that the world has already experienced its Trinity Test moment with AI.

— Kevin Holden Platt, Forbes.com, 1 Aug. 2026
These mutual declarations of victory ultimately could not save the memorandum.

— Erik Lin-Greenberg, Foreign Affairs, 31 July 2026

Definition of declaration

Noun

Miller has alleged his ex-wife has struggled with mental health challenges and is accusing her of making the claims against him to aid in a custody battle for their two-year-old daughter.

— Antonio Pequeño IV, Forbes.com, 5 Aug. 2026
Many people with anxiety claim that magnesium supplements help with their symptoms.

— Maggie O'Neill, Verywell Health, 4 Aug. 2026

Definition of claim

Noun

With San Francisco clearly out of contention, the team has no incentive to rush the 33-year-old Chapman’s return to the field.

— Justice delos Santos, Mercury News, 5 Aug. 2026
LaVine appeared in only 39 games last season before undergoing season-ending surgery to repair a torn tendon in his right pinky finger, a move seemingly hastened by the Kings again being eliminated early from playoff contention.

— Ira Winderman, Sun Sentinel, 3 Aug. 2026

Definition of contention

Noun

As this report explained, this is largely thanks to its uncompromising quality standards and its insistence that each of its attractions outdoes its predecessors.

— Caroline Reid, Forbes.com, 31 July 2026
Dunphy said a definite ask by the city will be an insistence on a labor-harmony agreement that ensures union jobs.

— Jason Quick, New York Times, 31 July 2026

Definition of insistence

Noun

But with this hypothesis the siblings felt they had been given the freedom to dream for the first time—the very time a miracle might just happen.

— Cynthia Zarin, Harpers Magazine, 4 Aug. 2026
The World Health Organization’s independent scientific advisory group reported in 2025 that much of the information needed to fully evaluate the competing hypotheses had not been provided by China.

— Art Jipson, The Conversation, 30 July 2026

Definition of hypothesis

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asserting

assertion

assertions

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“Assertion.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assertion. Accessed 7 Aug. 2026.

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Synonyms of assertion

noun

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