Synonyms for Bye (same or very similar meaning)
WordNet sense 1 (a farewell remark):
adieu, adios, bye-bye, good-by, goodbye, sayonara, arrivederci, cheerio, goodby, good-bye, auf wiedersehen, au revoir, good day, so long
WordNet sense 2 (you advance to the next round in a tournament without playing an opponent):
pass
From the ODE community, based on WordNet
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