This is a very colloquial way of expressing surprise or disbelief at something you have heard. It can also be used to ask someone to say something again.
You what?
This is a actual chatty way of cogent abruptness or atheism at article you accept heard. It can additionally be acclimated to ask addition to say article again. Dictionary
An You what? idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with You what?, allowing users to choose the best word for their specific context.
類似の言葉の辞書、別の表現、同義語、イディオム イディオム You what?