(1):
(a.) Absurd; ridiculous; despicable; contemptible.
(2):
(a.) Such as a fool would do; proceeding from weakness of mind or silliness; exhibiting a want of judgment or discretion; as, a foolish act.
(3):
(a.) Marked with, or exhibiting, folly; void of understanding; weak in intellect; without judgment or discretion; silly; unwise.