What is the synonym of 'fatuous'?

Fatuous is an adjective that means silly, foolish, or absurd. Synonyms for this word include ludicrous, absurd, foolish, preposterous, idiotic, and imbecilic. It has a negative connotation, implying something is not only wrong, but also foolish and foolishly done. It can be used to describe behaviors, ideas, or plans. When used to describe someone, it implies they are acting in a foolish or absurd manner.