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
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
Typically, the assumption is that something happened in the person's mind — a mental illness.
—
Aneri Pattani, CBS News, 28 Apr. 2026
Contrary to traditional medical assumptions, the study found that monthly increases in pollution exposure were particularly dangerous for demographics often considered lower risk.
—Khloe Quill, FOXNews.com, 28 Apr. 2026
The reason for that assumption is that conserving energy is one of the keys to success in marathoning.
—Adam Kovac, Scientific American, 27 Apr. 2026
In addition, any opinions and assumptions expressed herein are made as of the date of this communication and are subject to change and/or withdrawal without notice.
—Katie Stockton, CNBC, 27 Apr. 2026
See All Example Sentences for assumption
Aneri Pattani, CBS News, 28 Apr. 2026
Contrary to traditional medical assumptions, the study found that monthly increases in pollution exposure were particularly dangerous for demographics often considered lower risk.
—Khloe Quill, FOXNews.com, 28 Apr. 2026
The reason for that assumption is that conserving energy is one of the keys to success in marathoning.
—Adam Kovac, Scientific American, 27 Apr. 2026
In addition, any opinions and assumptions expressed herein are made as of the date of this communication and are subject to change and/or withdrawal without notice.
—Katie Stockton, CNBC, 27 Apr. 2026
See All Example Sentences for assumption
Recent Examples of Synonyms for assumption
Noun
-
Stirs some theories, too, about said coach’s real feelings about the pick.—
Zak Keefer,
New York Times,
27 Apr. 2026
-
In a new book, Geoff Kelly traces how the artworks moved through criminal networks, where violence took the lives of key suspects and witnesses, and challenges long-circulating theories by revisiting key details.—
ABC News,
ABC News,
26 Apr. 2026
Noun
-
The doctor further explained that the traits of a narcissist encompass low empathy, arrogance, entitlement, grandiosity and pathological selfishness.—
Brie Stimson,
FOXNews.com,
26 Apr. 2026
-
They both, in a good way, reek of confidence – not arrogance but confidence.—
Miami Herald,
Miami Herald,
26 Apr. 2026
Noun
-
Driven by blunt ideology rather than the reality of balancing harms, Font and Putnam-Hornstein advance a flawed and damaging premise that child safety requires normalizing and regularizing family separation.—
Chicago Tribune,
Chicago Tribune,
26 Apr. 2026
-
White House Correspondents Association Chair Weijia Jiang originally said the group would resume the program, but later took the stage to explain that law enforcement has requested attendees leave the premises.—
Shelly Banjo,
semafor.com,
26 Apr. 2026
Noun
-
There are those who once thought that the superiority of machines would cause a crisis for chess—and for humanity.—
Louisa Thomas,
New Yorker,
26 Apr. 2026
-
Piech wanted to show off the superiority of VW Group’s engineering.—
ArsTechnica,
ArsTechnica,
24 Apr. 2026
Noun
-
To test their hypothesis, researchers transplanted a second heart into mice.—
O. Rose Broderick,
STAT,
24 Apr. 2026
-
Our goal was to better test the hypothesis of an inborn gender difference in attention to, or interest in, other people.—
Lise Eliot,
The Conversation,
20 Apr. 2026
Noun
-
Even so, nuclear is the closest point of convergence between the two parties — a rare area where attitudes are narrowing rather than widening.—
Tiisetso Motsoeneng,
semafor.com,
27 Apr. 2026
-
But the team attitude appears to be in a healthy place.—
Josh Yohe,
New York Times,
27 Apr. 2026
Noun
-
Over the years, one of these pass catchers tends to inspire some belief over the summer.—
Alec Lewis,
New York Times,
27 Apr. 2026
-
Early cultures, including Native American tribes, looked to the heavens for time keeping, spiritual beliefs and navigation.—
Ernie Cowan,
San Diego Union-Tribune,
26 Apr. 2026
Noun
-
Ruben does little to dissuade Niall’s presumptions.—
Ben Travers,
IndieWire,
21 Apr. 2026
-
Meantime, all presumption of innocence from me.—
Miami Herald,
Miami Herald,
12 Apr. 2026
Cite this Entry
“Assumption.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assumption. Accessed 1 May. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
