- idiot, imbecile, cretin, moron, changeling, half-wit, retard - a person of subnormal intelligence
--1 is a kind of simpleton, simple
- changeling - a child secretly exchanged for another in infancy
--2 is a kind of child, kid, youngster, minor, shaver, nipper, small fry, tiddler, tike, tyke, fry, nestling