Breadcrumb Home > Thesaurus > O Synonyms of obnoxious Find synonyms for: Adjective1. objectionable, obnoxious, offensive (vs. inoffensive)usage: causing disapproval or protest; "a vulgar and objectionable person"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of obnoxious (Dictionary) ✖ Related Content Daily Word Quiz: hortatory Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language