What is the Italian form of "What" meaning "I didn't hear or understand, please repeat what you said."
1 Answer
Informal: Come? Cosa? Eh? Come/Cosa/Che hai detto?
Formal, (as suggested in a comment by @RiccardoDeContardi): Scusi? Prego? Può ripetere? Come/Cosa/Che ha detto?, the latest two usually followed by a further courtesy locution such as per favore/scusi/per cortesia.