/ Thesaurus / I Synonyms of inactiveness Find synonyms for: Noun1. inaction, inactivity, inactiveness, stateusage: the state of being inactive2. inactiveness, inactivity, inertia, traitusage: a disposition to remain inactive or inert; "he had to overcome his inertia and get back to work"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language