What is a silly person?
Is the word 'silly' a noun?
No. 'Silly' is a person, place, thing or idea. You wouldn't say that you have a silly. Silly is an adjective because it describes a noun. ANS2: I have heard a person being described as "full of silly" in that sense, or in the case where you name somebody "Silly" (Hey, Silly, stop putting those beans up your nose.) silly would be functioning as a noun.