Could you say that again?phrasePolitely asks someone to repeat what they said.“The line cut out. Could you say that again?”Sorry, I didn't catch thatphrasePolitely says you didn't hear or understand what was said.“Sorry, I didn't catch that. Did you say Tuesday?”Sorry, what was that?phraseA conversational request to repeat what was just said.“Sorry, what was that? Someone opened the door.”Would you mind repeating that?phraseA polite request to hear the same thing again.“Would you mind repeating that? I missed the room number.”Come again?phraseAn informal request for repetition; can also signal surprise.“The train leaves at five.” “Come again?”