idiotic Synonyms

absurd imbecile cockeyed derisory preposterous laughable ludicrous nonsensical imbecilic ridiculous sappy vapid puerile witless stupid scatty boneheaded addlebrained addlepated barmy vacuous thoughtless senseless silly simple-minded risible slow slow-witted thalian thick retarded dotty loopy airheaded ill-conceived moronic nitwitted half-baked goofy short-sighted birdbrained crackbrained unintelligent pea-brained scatterbrained softheaded mentally retarded meaningless empty-headed featherbrained