なあに
な
あ
に
Meanings
1
Casual, drawn-out variant of なに. Used in informal conversation, often with a softer or more curious tone.
See also: 何 (なに)
What's that?
2
Interjection expressing surprise or mild disbelief. The drawn-out vowel softens the abruptness of なに.
See also: 何 (なに)
What? You suddenly raised your voice.