replyreply2 noun (plural replies) [countableC]1a written or spoken answerThe Exchange said it had received a satisfactory reply from the bank.
We await your reply.
2letter of reply a letter answering one that has been receivedI received the standard letter of reply in response to my complaints.
3in reply to formal a way of starting a letter that answers one that has been receivedIn reply to your letter of 24 Jan, I am sorry to hear our product has not met our usual high standards.