Laughable or amusing through foolishness or a foolish appearance. / (of numbers, particularly prices) Absurdly large. / Good; pious. / Holy.

(now regional or colloquial) Sillily: in a silly manner.

(colloquial) A silly person. / (endearing, gently derogatory) A term of address. / (colloquial) A mistake.

(uncountable) That which is perceived as silly or frivolous. / (countable) An act that is silly; a result of being silly.

plural of silliness

plural of silly / (informal, as "the sillies") A period of foolish behaviour.

An island in the Turks and Caicos Islands.

plural of silly bean

Used other than figuratively or idiomatically: see silly, bean. / (childish) Someone acting in a silly or unintelligent manner.

(informal) A silly person; a simpleton.