Supposed
presupposed, suppositious, suppositional, conditional, conjectural, imagined, indeterminate, speculative, indefinite, questionable, unconfirmed, equivocal, doubtful, conjecturable, concocted, suspect, stochastic, stochastical, assumed by hypothesis, possible, uncertain, debatable, imaginary, of the nature of hypothesis, vague, theoretical, pretending, open, provisory, casual, disputable, refutable, postulational, contestable, presumptive, hypothesized, assumptive, contingent, theoretic, postulated, based on incomplete knowledge; see also assumed 1, likely 1.
Antonyms proved*, demonstrated, confirmed.