Synonyms of foolish

Adjective

1. foolish (vs. wise), absurd, cockeyed, derisory, idiotic, laughable, ludicrous, nonsensical, preposterous, ridiculous, asinine, fatuous, inane, mindless, vacuous, cockamamie, cockamamy, goofy, sappy, silly, wacky, whacky, zany, fond, harebrained, insane, mad, ill-conceived, misguided, rattlebrained, rattlepated, scatterbrained, scatty, unwise, impolitic, imprudent, inadvisable#1, unadvisable, ill-advised#1, unadvised

usage: devoid of good sense or judgment; "foolish remarks"; "a foolish decision"

2. anserine, dopy, dopey, foolish, goosey, goosy, gooselike, jerky, stupid (vs. smart)

usage: having or revealing stupidity; "ridiculous anserine behavior"; "a dopey answer"; "a dopey kid"; "some fool idea about rewriting authors' books"

Definition and meaning of foolish (Dictionary)