The Collaborative International Dictionary
Suppositional \Sup`po*si"tion*al\, a.
Resting on supposition; hypothetical; conjectural; supposed.
--South.
Wiktionary
a. Resting on supposition; hypothetical; conjectural.
WordNet
adj. based primarily on surmise rather than adequate evidence; "theories about the extinction of dinosaurs are still highly conjectural"; "the supposed reason for his absence"; "suppositious reconstructions of dead languages"; "supposititious hypotheses" [syn: conjectural, divinatory, supposed, suppositious, supposititious]
Usage examples of "suppositional".
You have a suppositional structure, which you need more data to substantiate sufficiently to impress someone who has turned noncompetitive.
Furthermore, humans can seldom comprehend true righteousness, only suppositional righteousness, which the Saint, in his 11th Axiom, calls "a snare and a pitfall.
He was puzzled by the growing Arctic cold, but the suppositional reason seemed to elude him.