/ Thesaurus / A Synonyms of ativan Find synonyms for: Noun1. lorazepam, Ativan, benzodiazepineusage: tranquilizer (trade name Ativan) used to treat anxiety and tension and insomniaWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language