What does 返信 mean?
返信 is a Japanese noun meaning “reply (e.g. email, fax, letter); answer” in English. It is written as 返信 in kanji, へんしん in hiragana, and henshin in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
これを受け取ったらすぐに返信してください。
Please send me a reply as soon as you receive this mail.