suppositional 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]

accounted as, alleged, arguable, assumed, assumptive, at issue, confutable, conjectural, conjectured, contestable, controversial, controvertible, debatable, deemed, deniable, disputable, doubtable, doubtful, dubious, dubitable, given, granted, hypothetical, iffy, in dispute, in doubt, in dubio, in question, inferred, mistakable, moot, open to doubt, open to question, postulated, postulational, premised, presumed, presumptive, problematic, putative, questionable, refutable, reputed, speculative, supposed, supposititious, suppositive, suppository, suspect, suspicious, taken for granted, understood