Breadcrumb Home > Thesaurus > O Synonyms of octave Find synonyms for: Noun 1. octave, religious festival, church festival usage: a feast day and the seven days following it 2. octave, musical octave, interval, musical interval usage: a musical interval of eight tones 3. octave, stanza usage: a rhythmic group of eight lines of verse WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of octave (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: suigeneris Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language