Used to express farewell.
[Japanese sayonara, sayōnara, alteration of sayō naraba, if be thus (said to indicate that the time for departure has come) : sayō, thus (sa, that + yō, appearance, from Middle Chinese jiang`; also the source of Mandarin yang`) + naraba, if it be.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.