Wiktionary
alt. A genius whose genius is extremely brilliant; an extremely smart person, to the point of making regular geniuses look ordinary. n. A genius whose genius is extremely brilliant; an extremely smart person, to the point of making regular geniuses look ordinary.
Usage examples of "supergenius".
The professor of biology was too much in awe of the supergenius to actually do anything in that direction until too late.
A mutant race of supergeniuses that mysteriously arose out of nowhere during the late Paleolithic Era?
I wondered if a man living behind a perpetual half-wit smile, a man incapable of keeping a neat house, a man conflicted enough to split his reading time between skin magazines and romance novels, could be a closet supergenius who, with electronic components from Radio Shack, would be able to transform one room of his humble home into a time machine.