なんだって
nandatte

Interjection

1. what?!; what did you say?!

Usually Written in Kana
Adverb

2. why?; what for?; for what reason?

なんだって わたくし ほんがこんなところにあるんだろう。
nanidatte watashino honga konna tokoroni aru ndarō
What's my book doing here?
Adverb

3. anyone; anything

Related to 何でも
そんな せきからコンサートが けたら、人 ひと、何 なんだってするさ。
sonna sekikara konsātoga kiketara hitowa nanidatte surusa.
People would sell their souls to hear the concert from those seats.