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"; "hypothetical situation"
to believe especially on uncertain or tentative grounds; "Scientists supposed that large dinosaurs lived in swamps"
mistakenly believed; "the supposed existence of ghosts"
require as a necessary antecedent or precondition; "This step presupposes two prior ones"
required or under orders; "I'm supposed to be there at ten"; "he was supposed to go to the store"
take for granted or as a given; suppose beforehand; "I presuppose that you have done your work"
doubtful or suspect; "these so-called experts are no help"
express a supposition; "Let us say that he did not tell the truth"; "Let's say you had a lot of money--what would you do?"
concerned primarily with theories or hypotheses rather than practical considerations; "theoretical science"
concerned with theories rather than their practical applications; "theoretical physics"