Why are you asking?

why Adverb

— Used to ask the reason for something. Why did you say that? Why did you try to steal money from this shop? — Used to talk about the reason for something. I wonder why he did that. — Used to give more information about the reason for something. Can you tell me the reason why he did that?

why Interjection

— Used to show a person's surprise or impatience about something. Why! Thank you for the present.

why Noun

— (plural: whys) The reason to something. Whenever you begin to write an essay, please do not forget to talk about the who, the what, the when, the where, the why and the how. — (plural: whies) A why is a young cow or woman.

are Verb

— Are is the present tense, second person form of the verb be. Hello John, how are you? We are all happy. Are we there yet? John and Mary are playing. Are you all hungry?

you Pronoun

— Used instead of the name of the person being spoken to; it is a second-person pronoun. You are my best friend. Can I go to the shops with you? — Used to talk about anyone. You have to be 18 years old to see that film. She has problems with her eyes, and can't see you properly.

you Determinative

— Used before a word that means the person or people someone is talking to. You guys can leave now.

asking

— noun (= request) the verbal act of requesting