Breadcrumb Home > Thesaurus > U Synonyms of unintelligent Find synonyms for: Adjective 1. unintelligent (vs. intelligent), stupid, brainless, headless, retarded, stupid usage: lacking intelligence; "a dull job with lazy and unintelligent co-workers" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of unintelligent (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: annular Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language