Proceeding from want of understanding or common judgment; characterized by weakness or folly; unwise; absurd; stupid; as, silly conduct; a silly question
If you say that someone or something is silly, you mean that they are foolish, childish, or ridiculous. My best friend tells me that I am silly to be upset about this That's a silly question. used to tell someone that you think they are not behaving sensibly
pungent adjectives of disesteem; "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books"