Main entry: imbecility, stupidity, folly, foolishness, betise
Definition: a stupid mistake
Main entry: unwiseness, folly, foolishness
Definition: the trait of acting stupidly or rashly
Main entry: folly, foolishness, craziness, madness
Definition: the quality of being rash and foolish
Usage: trying to drive through a blizzard is the height of folly; adjusting to an insane society is total foolishness