Breadcrumb Home > Thesaurus > I Synonyms of instillation Find synonyms for: Noun 1. instillation, instillment, instilment, insertion, introduction, intromission usage: the introduction of a liquid (by pouring or injection) drop by drop 2. instillation, liquid usage: a liquid that is instilled drop by drop WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of instillation (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: cognoscenti Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language