SUPPOSITION
supposition, supposal
(noun) the cognitive process of supposing
assumption, supposition, supposal
(noun) a hypothesis that is taken for granted; “any society is built upon certain assumptions”
guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis
(noun) a message expressing an opinion based on incomplete evidence
Source: WordNet® 3.1
Etymology
Noun
supposition (countable and uncountable, plural suppositions)
Something that is supposed; an assumption made to account for known facts, conjecture.
The act or an instance of supposing.
Synonyms
• See also supposition
Source: Wiktionary
Sup`po*si"tion, n. Etym: [F. supposition, L. suppositio a placing
under, a substitution, fr. supponere, suppositium, to put under, to
substitute. The word has the meaning corresponding to suppose. See
Sub-, and Position.]
1. The act of supposing, laying down, imagining, or considering as
true or existing, what is known not to be true, or what is not
proved.
2. That which is supposed; hypothesis; conjecture; surmise; opinion
or belief without sufficient evidence.
This is only an infallibility upon supposition that if a thing be
true, it is imposible to be false. Tillotson.
He means are in supposition. Shak.
Source: Webster’s Unabridged Dictionary 1913 Edition