silly Synonyms

brainless dizzy unwise wacky zany witless goofy foolish featherbrained empty-headed ridiculous giddy reckless trivial unreasonable addlepated addlebrained vacuous vertiginous slapstick cockeyed waggish scatty witty gooselike trifling tomfool sillily shallow senseless sappy risible punchy puerile preposterous simple simplistic skin-deep thick-headed swooning superstitious superficial sucker stupid sophomoric soft pointless muddleheaded dotty meaningless