/ Thesaurus / I Synonyms of inactivation Find synonyms for: Noun1. inactivation, natural process, natural action, action, activityusage: the process of rendering inactive; "the gene inactivation system"; "thermal inactivation of serum samples"2. deactivation, inactivation, dismissal, dismission, discharge, firing, liberation, release, sack, sackingusage: breaking up a military unit (by transfers or discharges)WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language