/ Thesaurus / M Synonyms of monoamine oxidase inhibitor Find synonyms for: Noun1. monoamine oxidase inhibitor, MAOI, antidepressant, antidepressant drugusage: any of a group of antidepressant drugs that inhibit the action of monoamine oxidase in the brain and so allow monoamines to accumulateWordNet 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