Breadcrumb Home > Thesaurus > I Synonyms of iq Find synonyms for: Noun 1. intelligence quotient, IQ, I.Q., ratio usage: a measure of a person's intelligence as indicated by an intelligence test; the ratio of a person's mental age to their chronological age (multiplied by 100) WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of iq (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Hanukkah Origins of the Christmas Holiday Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 Krampus: The Christmas Devil Kwanzaa ✖ Related Content Daily Word Quiz: jactation Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language