Synonyms for fanny Found 30 synonyms across 2 meanings for “fanny”. the fleshy part of the human body that you sit on (noun) buttocksnatesarsebuttbacksidebumbunscanfundamenthindquarterskeisterposteriorpratrear external female sex organs (noun) Explore Related Words Rhymes with fannySynonyms for buttocksSynonyms for natesSynonyms for arseSynonyms for buttSynonyms for backside Synonym Finder | Rhyme Finder | Poetry Editor