なぜ
なぜ · naze · JLPT N5 · adverb
why (same as どうして)
naze = na (what, from nani) + ze (emphatic): what is it that...
The na is the same root as nani (what), plus an old emphatic particle, so naze is literally asking for the what behind something. It is the more formal, written twin of doushite. Sound hook: NAH-zeh, as in Nah... zeh reason is?