Synonyms of suppositious

2 Syllables
bastard, floater, unreal, misborn
3 Syllables
fanciful, apparent, alleged, stochastic, storybook, invented, fantastic, purported, accounted, likely, phantasmal, phantasmic, fictitious, counterfeit, reputed, asserted, presumed
4 Syllables
illusory, barmecidal, ostensive, conjectural, presumptive, ungenuine, putative, counterfeited, hypothetic, misbegotten, refutable, inferential, presupposed
5 Syllables
hypothetical, suppository, suppositive, phantasmagoric, suppositional, supposititious