moron

moron · noun¹

1. Ancient Greek · learned borrowing fromμωρόν
2. English todaymoron

Coined by American psychologist Henry H. Goddard in 1910, from Ancient Greek μωρόν (mōrón), the neuter form of μωρός (mōrós, “foolish, dull”).

moron · noun²

Coined by American legal philosopher Ronald Dworkin in late 20th c.; by surface analysis, mor(al) + -on. The obvious idea that the homonymy with the usual sense of moron was likely intentional has been supported by some of Dworkin's fellow philosophers.