/ Thesaurus / I Synonyms of impassivity Find synonyms for: Noun1. emotionlessness, impassivity, impassiveness, phlegm, indifference, stolidity, unemotionality, apathyusage: apathy demonstrated by an absence of emotional reactionsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language