Like a fool; manifesting folly; deficient in understanding, sense, or discretion; weak in intellect or judgment; unwise.Proceeding from or prompted by folly; exhibiting a want of discretion or discrimination; silly; vain; trifling.Ridiculous; contemptible.Denoting or indicative of folly.Slight; insignificant.Synonyms Silly, Foolish (see absurd); shallow, brainless, harebrained, simple.