What is another word for bye bye?
Pronunciation: [bˈa͡ɪ bˈa͡ɪ] (IPA) 
"Bye bye" is a colloquial phrase that is often used to bid goodbye to someone. However, there are several synonyms for "bye bye" that you can use instead. Some of these synonyms include terms such as "farewell," "adieu," "so long," "see you later," "adios," "cheerio," "au revoir," and "goodbye." Depending on the context, some of these synonyms might be more appropriate or formal than others. Ultimately, the synonym that you choose should reflect the tone of the conversation and the level of familiarity you have with the person you are bidding farewell to.
