何だって
Meanings
1
what?!; what did you say?!
usually written using kana alone
An exclamation of surprise or disbelief, often used when hearing unexpected news. Casual and conversational.
Huh, what?! Say that again.
He's quitting? What?!
2
why?; what for?
Used to ask the reason for something, often with a tone of surprise or demand. More emphatic than なぜ.
Why on earth did you do that?
What are you doing here at this hour?
3
Used in the pattern なんだって～ to mean 'anyone' or 'anything', similar to 何でも. Often followed by a verb like できる or いい.
See also: なんでも
He can do anything.
Anything is fine.
Expressions
- 何だっていいanything is fine; it doesn't matter what