なぜ（なぜ）— why
なぜ です か。
Why?
なぜなぜ
why
なぜ
accent [1]In detail
Words
なぜnazewhy
ですdesu(polite sentence ending)
かka(question marker)
なぜ asks “why” and can sound formal or analytical. どうして and the casual なんで are also common in conversation.
Coco-sensei
In detail