/ Thesaurus / I Synonyms of in vacuo Find synonyms for: Adverb1. in vacuousage: in isolation and without reference to anything else2. in vacuousage: in a vacuumWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language