/ Thesaurus / H Synonyms of half moon Find synonyms for: Noun1. half-moon, lunula, lunule, area, regionusage: the crescent-shaped area at the base of the human fingernail2. half-moon, phase of the moonusage: the time at which the Moon is at first or last quarter when half its face is illuminatedWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language