Meanings
plural suppositions
- countableuncountableSomething that is supposed; an assumption made to account for known facts, conjecture.
The supposition that Geoffrey had been chloroformed was a reasonable hypothesis at that stage of the disclosure.
1934, Ernest Bramah [pseudonym; Ernest Brammah Smith], The Bravo of London1 more example
The supposition would therefore have to be that socialism will owe its success to a higher degree of labour productivity than is possible under capitalism.
1978 [1976], Leszek Kołakowski, translated by P[aul] S[teven] Falla, Main Currents of Marxism, volume I: The Founders, Oxford: Clarendon Press, translation of Główne nurty marksizmu: powstanie (in Polish), →ISBN, →OCLC, page 375 - countableuncountableThe act or an instance of supposing.
Synonyms & antonyms
nouna message expressing an opinion based on incomplete evidence
nouna hypothesis that is taken for granted
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- Latinsuppositiō, suppositiōnem“supposition”
- Anglo-Normansupposicion
- Middle Englishsupposicioun
- Englishsupposition
From Middle English supposicioun, from Anglo-Norman supposicion, from Latin suppositiō, suppositiōnem (“supposition”), from sub- (“under”) + positiō, positiōnem (“position; theme”), from positus (“position”), from the perfect passive participle of pōnō, pōnere (“put, place”).
More words from Middle English, Anglo-Norman, Latin
Full word history & related roots →Translations
Ancient Greek ὑπόληψις
- ὑπόληψις (hupólēpsis)assumption
Arabic اِفْتِرَاض, فَرْضِيَّة
- اِفْتِرَاض (iftirāḍ)assumption
- فَرْضِيَّة (farḍiyya)assumption
Bulgarian предположе́ние
- предположе́ние (predpoložénie)assumption
Catalan suposició
- suposicióassumption
Chinese Mandarin 假定, 設想 /设想
- 假定 (jiǎdìng)assumption
- 設想 /设想 (shèxiǎng)assumption
Czech předpoklad
- předpokladassumption
Dutch veronderstelling
- veronderstellingassumption
Esperanto supozo
- supozoassumption
Finnish oletus
- oletusassumption
French hypothèse, supposition
- hypothèseassumption
- suppositionassumption
- conjectureassumption
German Annahme, Supposition
- Annahmeassumption
- Suppositionassumption
- Annehmenthe act or an instance of supposing
Greek υπόθεση
- υπόθεση (ypóthesi)assumption
Hungarian feltevés
- feltevésassumption
Irish glacan, dóigh
- glacanassumption
- dóighassumption
- forshuíomhthe act or an instance of supposing
- toimhdethe act or an instance of supposing
Italian supposizione, presupposto
- supposizioneassumption
- presuppostoassumption
Japanese 想像, 推測
- 想像 (sōzō)assumption
- 推測 (suisoku)assumption
Korean 상상, 추측
- 상상 (sangsang)assumption
- 추측 (chucheuk)assumption
Māori pūmāramarama
- pūmāramaramaassumption
Polish założenie, przypuszczenie
- założenieassumption
- przypuszczenieassumption
- założeniethe act or an instance of supposing
- przypuszczeniethe act or an instance of supposing
Portuguese suposição
- suposiçãoassumption
Romanian supoziție, presupunere
- supozițieassumption
- presupunereassumption
- presupunerethe act or an instance of supposing
Russian предположе́ние
- предположе́ние (predpoložénije)assumption
Slovak predpoklad
- predpokladassumption
Spanish suposición
- suposiciónassumption
Swedish supposition
- suppositionassumption
Ukrainian припу́щення
- припу́щення (prypúščennja)assumption
Cite this entry
supposition. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/supposition
“supposition.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/supposition. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “supposition,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/supposition.
Source: supposition on Wiktionary, CC BY-SA 4.0.