Arrivederci means "until we see each other again," conveying a sense of optimism about future reunions. Used in formal contexts, arrivederci is more polite than the informal "ciao". For even more formality, use "arrivederla", which is appropriate in respectful situations. Other ways to say goodbye include "addio" for dramatic farewells and "presto" for casual, friendly goodbyes. Understanding these nuances helps tailor your goodbyes to fit the emotional tone of the situation.

Source: Think in Italian