noun

supposition

suh-puh-ZIH-shuhn

noun

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

suppositions plural

Study it as flashcards or scroll it in Flow — saved to your collection.

Can you complete this real example?

Her theory rests entirely on _____.

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

assumption conjecture educated guess given foreguess guess guesstimate hunch hypothesis inference overhope posit

given belief guess hypothesis conjecture assumption inference suppose

ion lion Zion Dion Sion union scion Orion Onion action minion bunion

assumption conjecture educated guess given foreguess guess guesstimate hunch hypothesis inference overhope posit