チャオFreq.FrequencyTop 50,000Meanings1interjectionciao; hello; goodbyeCasual greeting or farewell borrowed from Italian; used in informal, friendly contexts, similar to 'hi' or 'bye'.from Italianチャオ、元げん気き?Ciao, how are you?じゃあ、また明日あした。チャオ!See you tomorrow. Ciao!