Adjectives

(s)supposedrequired or under orders“I'm supposed to be there at ten”, “he was supposed to go to the store”
(s)supposedmistakenly believed“the supposed existence of ghosts”
(s)alleged, so-called, supposeddoubtful or suspect“these so-called experts are no help”
(s)conjectural, divinatory, hypothetical, hypothetic, supposed, suppositional, suppositious, supposititiousbased 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”, “hypothetical situation”