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
Unlike dining out at home, cruise tipping policies vary widely by brand and assumptions can lead to mistakes.
—
Kait Hanson,
Southern Living,
3 July 2026
Surround yourself with people who challenge your assumptions, and lean into the discomfort.
—
Mikhail Shneyder,
Forbes.com,
2 July 2026
Amazon challenged that assumption by proving consumers valued faster delivery enough to justify placing inventory in more locations, before ultimately regionalizing its fulfillment network.
—
Glenn Taylor,
Footwear News,
2 July 2026
But African countries cannot build their future on the assumption that foreign governments will always fill the gaps.
—
W. Gyude Moore,
semafor.com,
2 July 2026
See All Example Sentences for assumption
Kait Hanson,
Southern Living,
3 July 2026
Surround yourself with people who challenge your assumptions, and lean into the discomfort.
—
Mikhail Shneyder,
Forbes.com,
2 July 2026
Amazon challenged that assumption by proving consumers valued faster delivery enough to justify placing inventory in more locations, before ultimately regionalizing its fulfillment network.
—
Glenn Taylor,
Footwear News,
2 July 2026
But African countries cannot build their future on the assumption that foreign governments will always fill the gaps.
—
W. Gyude Moore,
semafor.com,
2 July 2026
See All Example Sentences for assumption
Recent Examples of Synonyms for assumption
Noun
-
Germ theory also emerged in the late 1800s, in which scientists discovered that germs caused disease.
-
The two budding geniuses would sit in Charles’ apartment for hours, talking music theory and analyzing records, though Jones’s curiosity occasionally exhausted Charles.
Noun
-
Needless to say there was no second date, and, eventually though painfully, my own arrogance had some of its rough edges worn down.
-
In Episode 3, Harris discussed the early arrogance of the founding fathers who made proposals for America's independence and questioned who was entitled to freedom.
Noun
-
Surveillance cameras were also placed on the team floors of the hotel, as well as in the lobby and meeting rooms, and local media were only permitted in the team hotel for official press events, while fans were barred from the premises altogether.
-
Ensure your home is securely locked when vacating the premises.
Noun
-
These early precedents in fictional brutality also weaken Thomson’s next point, about literature’s superiority.
-
Part of the reason for this is the Dodgers have entered a boring-great stage of hegemony, in which their superiority over the rest of the league is so pronounced that there is little to discuss on a day-to-day basis.
Noun
-
The interest rate hypothesis points the wrong direction — the most rate-sensitive occupations, like construction, have the lowest AI exposure.
-
Science is designed to estimate risk, test hypotheses, identify patterns, and reduce the likelihood of false causal inference.
Noun
-
Rendon’s attitude and performance became so disappointing that the Angels effectively told him to stay away in 2026 and restructured the final year of his contract.
-
The fans got their wish after a roller coaster of emotions as Team USA, down a man for the final 36 minutes after a Folarin Balogun red card, showed grit, poise and never-say-die attitude to hang on for a 2-0 win to advance to the Round of 16.
Noun
-
As Jupiter and Chiron clash, explore new beliefs or ideas without committing to them – yet.
-
Beyond the importance of education, he was also motivated by his own beliefs about the role of wealth in society and China’s national development.
Noun
-
The presumption of innocence was used by Queiroz to justify the decision to include Partey in Ghana’s World Cup squad and by Spanish club Villarreal to justify his signing last summer as a free agent.
-
The letter makes presumptions about herbicides and pesticides that do not line up with its proposal outlined on a website detailing the training center project, the statement said.
Cite this Entry
“Assumption.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/assumption. Accessed 5 Jul. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
