Source : WordNet®

arrivederci
     n : a farewell remark; "they said their good-byes" [syn: {adieu},
          {adios}, {auf wiedersehen}, {au revoir}, {bye}, {bye-bye},
          {cheerio}, {good-by}, {goodby}, {good-bye}, {goodbye}, {good
         day}, {sayonara}, {so long}]