Okaeri nasai means "Welcome home" or "Welcome back." This is the response given to someone who says "Tadaima." It's a warm and welcoming greeting from those who were waiting at home. It acknowledges their return. Family members use this daily. "おかえりなさい！今日もお疲れ様でした。" (Welcome home! You worked hard today.).

「ただいま」と言って帰ってきた人に対して言う言葉です。帰宅を歓迎する気持ちです。「おかえりなさい！」