/ Thesaurus / M Synonyms of monthlong Find synonyms for: Adjective1. monthlong, long (vs. short)usage: last through a month; "a monthlong stay in the hospital"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: reluctant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language