/ Thesaurus / M Synonyms of month by month Find synonyms for: Adverb1. month by monthusage: for an indefinite number of months; "month by month, the betrayal gnawed at his heart"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: voracious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language