Synonyms for folly Found 11 synonyms across 4 meanings for “folly”. the trait of acting stupidly or rashly (noun) foolishnessunwiseness a stupid mistake (noun) stupiditybetiseimbecility the quality of being rash and foolish (noun) crazinessmadness foolish or senseless behavior (noun) foolerytomfoolerylunacyindulgence Explore Related Words Rhymes with follySynonyms for foolishnessSynonyms for unwisenessSynonyms for stupiditySynonyms for betiseSynonyms for imbecility Synonym Finder | Rhyme Finder | Poetry Editor