adj. 25B6; adjective SPECULATIVE, suppositional, suppositious, theoretical, hypothetical, putative, notional; postulated, inferred, presumed, assumed, presupposed, tentative.
CONJECTURAL
Meaning of CONJECTURAL in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012