Romance Languages:
* Spanish: Adiós
* Italian: Arrivederci
* French: Au revoir
* Portuguese: Adeus
* Romanian: La revedere
Germanic Languages:
* German: Auf Wiedersehen
* Dutch: Tot ziens
* Swedish: Hej då
* Danish: Farvel
* Norwegian: Ha det bra
Slavic Languages:
* Russian: До свидания (Do svidaniya)
* Polish: Do widzenia
* Czech: Na shledanou
* Ukrainian: До побачення (Do pobachennia)
Other Languages:
* Japanese: さようなら (Sayōnara)
* Korean: 안녕히 계세요 (Annyeonghi kyeseyo)
* Chinese (Mandarin): 再见 (Zàijiàn)
* Arabic: وداعا (Wada'an)
* Hindi: अलविदा (Alvida)
Note: There are many regional variations and informal ways to say "goodbye" in different languages. The list above provides some common examples.