supposition

C2+ Topic:Abstract Ideas

Also spelled supposeetion

US /ˌsʌpəˈzɪʃən/ UK /ˌsʌpəˈzɪʃən/ See IPA manual

Meanings

1

noun
an assumption or belief held without proof

His theory rested on the supposition that prices would rise.

Thesaurus

Synonyms

1 noun · an assumption or belief... assumption hypothesis conjecture surmise presumption speculation guess

Opposites

certainty fact proof

Word family

Derived forms suppositionalsuppositious

Related forms supposesuppositious

Etymology

From Late Latin suppositio ('a placing under, assumption'), from Latin suppositus, past participle of supponere ('to place under, substitute'), from sub- ('under') + ponere ('to place').

suppositio Latin ponere Latin

View etymology graph ->

Topics

Abstract Ideas Word Formation & Derivatives

External links

# supposition

**Type:** Word
**Level:** C2+
**Part of speech:** noun
**IPA (US):** /ˌsʌpəˈzɪʃən/
**IPA (UK):** /ˌsʌpəˈzɪʃən/

## Meanings
1. an assumption or belief held without proof

## Examples
- His theory rested on the supposition that prices would rise.

## Synonyms
- assumption
- hypothesis
- conjecture
- surmise
- presumption
- speculation
- guess

## Antonyms
- certainty
- fact
- proof

## Derived Forms
- suppositional
- suppositious

## Related Forms
- suppose
- suppositious

## Roots and Affixes
- Root: suppositio
- Root: ponere - to put

## Etymology
From Late Latin suppositio ('a placing under, assumption'), from Latin suppositus, past participle of supponere ('to place under, substitute'), from sub- ('under') + ponere ('to place').

## AI Etymology
Supposition is from Late Latin suppositio ('a placing under, assumption'), from Latin suppositus, past participle of supponere ('to place under, substitute'), from sub- ('under') + ponere ('to place'). Important recorded forms include suppositio (Latin) and ponere (Latin). Morphologically, the word is a built form whose named elements carry part of the historical sense. The current sense covers an assumption or belief held without proof. The wider family includes derived forms such as suppositional and suppositious and related words such as suppose and suppositious.

## Topics
- Abstract Ideas
- Word Formation & Derivatives

markdown