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noun

supposition

suh-puh-ZIH-shuhn
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Supposition (noun) means an assumption made without full proof. Example: “Her theory rests entirely on supposition.”

noun
1
An assumption made without full proof.
"Her theory rests entirely on supposition."
"It's only a supposition, but I think he's hiding something."

How to use supposition

Learner’s notes

In plain EnglishAn unproven assumption or guess used as a starting point.

Common pairings
mere supposition based on supposition
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Word forms

Plural
suppositions
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Fill the gap

Can you complete this real example?

Her theory rests entirely on _____.

Etymology

From Latin suppositio, from sub- ("under") + positio ("position"), from ponere ("to put, place").

Origin: Latin

Related words

Rhymes for supposition

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Frequently asked questions

What does “supposition” mean?
The word “supposition” means an assumption made without full proof. In plain terms, an unproven assumption or guess used as a starting point.
How do you pronounce “supposition”?
“Supposition” is pronounced suh-puh-ZIH-shuhn (/ˌsʌpəˈzɪʃən/ in IPA).
How do you use “supposition” in a sentence?
Here is “supposition” used in a sentence: “Her theory rests entirely on supposition.”
What is another word for “supposition”?
Words with a similar meaning to “supposition” include assumption, conjecture, educated guess, given, foreguess and guess.
What part of speech is “supposition”?
“Supposition” is a noun.
Where does the word “supposition” come from?
The word “supposition” comes from Latin. From Latin suppositio, from sub- ("under") + positio ("position"), from ponere ("to put, place").

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