1
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
2
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
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Recent Examples of assumption
For another person, having the flaws in one’s assumptions dissected before an audience of peers might have snuffed out any curiosity about human evolution.
—
Megan Molteni, STAT, 7 Apr. 2026
At the center of that story are two sisters, Mary Freeman and Eliza Freeman, whose lives challenge nearly every assumption about Black existence in 19th century America.
—Reginald David, Hartford Courant, 7 Apr. 2026
But in creative and fast-moving sectors, those assumptions rarely hold.
—Rolling Stone Culture Council, Rolling Stone, 7 Apr. 2026
But new analysis shows those assumptions were all wrong.
—Greg Dixon, NPR, 6 Apr. 2026
See All Example Sentences for assumption
Megan Molteni, STAT, 7 Apr. 2026
At the center of that story are two sisters, Mary Freeman and Eliza Freeman, whose lives challenge nearly every assumption about Black existence in 19th century America.
—Reginald David, Hartford Courant, 7 Apr. 2026
But in creative and fast-moving sectors, those assumptions rarely hold.
—Rolling Stone Culture Council, Rolling Stone, 7 Apr. 2026
But new analysis shows those assumptions were all wrong.
—Greg Dixon, NPR, 6 Apr. 2026
See All Example Sentences for assumption
Recent Examples of Synonyms for assumption
Noun
-
One theory is that ultraviolet radiation from the sun may have been the key.—
Jerome Groopman,
New Yorker,
6 Apr. 2026
-
Priscilla Wald, who teaches about science fiction at Duke University, has a theory as to why.—
ABC News,
ABC News,
4 Apr. 2026
Noun
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More accurately, these failings are arrogance and incompetence.—
DP Opinion,
Denver Post,
4 Apr. 2026
-
Listen to Martyr Khamenei's words on why Islamic governments and nations must stand united and fight the US arrogance in the region.—
Steven Stalinsky,
MSNBC Newsweek,
30 Mar. 2026
Noun
-
That premise was tested in the spring of 2019, when OpenAI was negotiating a billion-dollar investment from Microsoft.—
Ronan Farrow,
New Yorker,
6 Apr. 2026
-
Ensure your home is securely locked when vacating the premises.—
STAR-TELEGRAM WEATHER BOT,
Fort Worth Star-Telegram,
5 Apr. 2026
Noun
-
When science said dinosaurs were pea-brained and cold-blooded, humans took their demise as proof of the superiority of warm, clever mammals.—
Scottie Andrew,
CNN Money,
5 Apr. 2026
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American military superiority, specifically air dominance, is an assertion that has been frequently echoed by the president's top military aide, Hegseth.—
Fritz Farrow,
ABC News,
3 Apr. 2026
Noun
-
What is emerging is a picture of an artist of profound mathematical acuity, who mobilized geometric, sequential, and modular forms to test hypotheses on interrelation, regeneration, and evolution in pursuit of mystical revelation.—
Katherine Rochester,
Artforum,
1 Apr. 2026
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His method of intellectual humility is to admit ignorance, test variables and revise working hypotheses based on new data, staying open to suggestions from others the whole time.—
Deana L. Weibel,
The Conversation,
31 Mar. 2026
Noun
-
As Merlin learned how to use the pre-recorded buttons, audiences fell in love with the then-tiny pig’s big attitude.—
Camila Pedrosa,
Sacbee.com,
5 Apr. 2026
-
The movement language expresses attitude, with its amalgam of hip-hop, jazz, ballet, Korean traditional dance and musical theater.—
Marcia Luttrell,
San Diego Union-Tribune,
5 Apr. 2026
Noun
-
Her work was rooted in a belief that erotic art was not taboo — but deeply human.—
Zachary Bynum,
CBS News,
6 Apr. 2026
-
There’s a responsibility that comes with that, and trust, and belief.—
Josh Yohe,
New York Times,
6 Apr. 2026
Noun
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Registration on the Principal Register provides nationwide constructive notice, a legal presumption of ownership, and the right to use the ® symbol — tools that matter when knockoffs and unauthorized merchandise inevitably appear.—
PJ Green
April 8,
Kansas City Star,
8 Apr. 2026
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Where Uthmeier succumbs to bigotry is in the presumption that DEI means unqualified.—
Howard L. Simon,
The Orlando Sentinel,
5 Apr. 2026
Cite this Entry
“Assumption.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assumption. Accessed 12 Apr. 2026.
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