/ Thesaurus / A Synonyms of adult intelligence Find synonyms for: Noun1. adult intelligence, intelligence quotient, IQ, I.Q.usage: the average IQ of the adults in a given populationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: confectionery Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language