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Noun: so long
  1. A farewell remark
    - adieu, adios, arrivederci, auf wiedersehen, au revoir, bye, bye-bye, cheerio [Brit], good-by [US], goodby [US], good-bye [N. Amer], goodbye, good day, sayonara [US], farewell
Interjection: so long
  1. An informal farewell remark
    "We all stopped to say so long before her flight left";
    - cheers [Brit], chin-chin [Brit], toodle-oo, toodle-pip [Brit], ta-ta [Brit], ta-ra [UK], bye, goodbye, bye-bye, good-bye [N. Amer], good-by [US], farewell, sayonara [US]

Type of: farewell, word of farewell

Encyclopedia: So long, astoria