suppositious
adj 1: 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" [syn: {conjectural},
{divinatory}, {hypothetical}, {hypothetic}, {supposed},
{suppositional}, {suppositious}, {supposititious}]