ASSUMPTION Synonyms: 137 Similar and Opposite Words

assumption

noun

ə-ˈsəm(p)-shən

Definition of assumption

as in theory

something taken as being true or factual and used as a starting point for a course of action or reasoning the widespread assumption that violent entertainment leads to violent behavior in children your argument is faulty because it's based on erroneous assumptions

Synonyms & Similar Words

Relevance

as in arrogance

an exaggerated sense of one's importance that shows itself in the making of excessive or unjustified claims his air of assumption tended to put people off rather quickly

Synonyms & Similar Words

Antonyms & Near Antonyms

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 assumption Trading spaghetti alla Nerano for fish and chips might seem like a downgrade—but Tucci pushes back on that assumption. — Savannah Walsh, Vanity Fair, 16 Oct. 2026 But that judgment rests in part on assumptions about how the Fed communicates that may no longer hold under its new chairman. — Matt Peterson, CNBC, 16 Oct. 2026 Yet the teams running them may be working toward different goals and, in some cases, making decisions based on different assumptions. — Simon Wells, Forbes.com, 16 Oct. 2026 When Joe Buck signed a $100 million extension with ESPN, the natural assumption around the industry was that Troy Aikman would soon follow. — Bobby Burack Outkick, FOXNews.com, 16 Oct. 2026 See All Example Sentences for assumption

Recent Examples of Synonyms for assumption

Noun

Framing theory explains how the presentation of information in the media influences the way people process and interpret it.

— Heather LaMarre, The Conversation, 14 Oct. 2026
His theory didn’t reach far beyond Japan until the translation of his original essay, first in 1978, then in 2005, and again, with Mori’s approval, in 2012.

— Daniel Hernandez, Los Angeles Times, 14 Oct. 2026

Definition of theory

Noun

An America that seeks justice with dignity and wisdom, not arrogance and gore.

— Los Angeles Times, Los Angeles Times, 14 Oct. 2026
These fascinating, illuminating episodes raise the question of whether great fiction requires the kind of single-mindedness and even arrogance that McCarthy cultivated.

— New York Times, New York Times, 8 Oct. 2026

Definition of arrogance

Noun

Previously announced under the title Shaolin Women’s Soccer, the Hong Kong-China co-production reworks the original film’s martial-arts-meets-scrappy-sports-team premise around an all-female squad of underdogs.

— Patrick Brzeski, HollywoodReporter, 14 Oct. 2026
Before Game 1 of the NLCS was played, Brewers general manager Matt Arnold was asked about the premise of small market teams like Milwaukee not being able to compete with powerhouse franchises like Los Angeles and the two teams in New York.

— Isaac Tellechea, CNN Money, 14 Oct. 2026

Definition of premise

Noun

Meanwhile, the People’s Liberation Army (PLA), which sees space superiority as essential to winning future wars, is developing a range of space capabilities as well as a suite of weapons that can attack satellites.

— Kathleen Curlee, Foreign Affairs, 14 Oct. 2026
Credibility is affected deeply by strategic cultural assessments about superiority and inferiority, and notions about when, where, how and for whom the credibility matters.

— Christopher Nichols, The Conversation, 9 Oct. 2026

Definition of superiority

Noun

Consistent with their hypothesis, the secretion signal helps transfer the enzyme out of the cell, while the lipid anchor holds it near the cell surface.

— Muskan Bhatia, Interesting Engineering, 21 Oct. 2026
But there are indirect consequences of the Many Worlds hypothesis that could lend the idea credibility.

— Philipp Strasberg, Scientific American, 20 Oct. 2026

Definition of hypothesis

Noun

The exhibition highlights how trade routes connected the Arabian Gulf, East Africa, India, China, and Southeast Asia through the exchange of spices, pearls, textiles, jewelry, and religious beliefs.

— Melissa Hancock, Fortune, 21 Oct. 2026
The verdict, Wright says, shattered his belief in both the judicial system and religion.

— Los Angeles Times, Los Angeles Times, 20 Oct. 2026

Definition of belief

Noun

The Charter Review Commission does serious work and its recommendations deserve real weight, a full public hearing, and a genuine presumption in their favor.

— Orlando Sentinel Staff, The Orlando Sentinel, 13 Oct. 2026
Historically, electoral-roll registration was based on a presumption of citizenship.

— Isaac Chotiner, New Yorker, 13 Oct. 2026

Definition of presumption

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assuming

assumption

assumptions

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“Assumption.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assumption. Accessed 21 Oct. 2026.

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Synonyms of assumption

noun

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