Synonyms for wacky Found 25 synonyms across 2 meanings for “wacky”. ludicrous, foolish (adj) goofysillywhackyzany informal or slang terms for mentally irregular (adj) balmybarmybatsbattybonkersbuggycrackedcrackersdaftdottyfruityhaywirekookykookieloco Explore Related Words Rhymes with wackySynonyms for goofySynonyms for sillySynonyms for whackySynonyms for zanySynonyms for balmy Synonym Finder | Rhyme Finder | Poetry Editor