Breadcrumb Home > Thesaurus > M Synonyms of moron Find synonyms for: Noun 1. idiot, imbecile, cretin, moron, changeling, half-wit, retard, simpleton, simple usage: a person of subnormal intelligence 2. Moron usage: a city in Argentina, to the west of Buenos Aires WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of moron (Dictionary) ✖ Related Content Daily Word Quiz: umbrage Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language