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Wordnet 3.0

NOUN (1)

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


The Collaborative International Dictionary of English v.0.48:

Good-by \Good`-by"\, Good-bye \Good`-bye"\, n. or interj. [A contraction of God be with ye (God be w[i^] ye, God bw' ye, God bwye).] Farewell; a form of address used at parting. See the last Note under By, prep. --Shak. [1913 Webster]
WordNet (r) 3.0 (2006):

goodbye n 1: a farewell remark; "they said their good-byes" [syn: adieu, adios, arrivederci, auf wiedersehen, au revoir, bye, bye-bye, cheerio, good-by, goodby, good-bye, goodbye, good day, sayonara, so long]