Synonyms of supposititious

2 Syllables
crocker, forged, floater, unreal, mythic
3 Syllables
notional, alleged, apparent, mythical, storybook, invented, purported, accounted, hollywood, dreamed-up, likely, fictitious, reputed, asserted, folkloric, vicarial, presumed
4 Syllables
illusory, suppositious, mythologic, substituted, substitute, barmecidal, conjectural, presumptive, substituting, hypothetic, inferential, presupposed
5 Syllables
hypothetical, suppository, suppositive, suppositional, mythological, imaginary, substitutive
6 Syllables
illegitimate