Is “Arrivederci” a Scrabble word?
Yes
ARRIVEDERCI
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Arrivederci
/əˌɹiːvəˈdɛətʃi/
noun
1.An Italian farewell by saying "arrivederci".
interjection
1.(in the context of Italy or Italian culture) farewell, goodbye, see you later (non-definitive farewell)