bye

(noun) you advance to the next round in a tournament without playing an opponent. Synonyms: pass. Example: "He had a bye in the first round."

(noun) a farewell remark. Synonyms: adieu, adios, arrivederci, auf wiedersehen, au revoir, bye-bye, cheerio, good-by, goodby, good-bye, goodbye, good day, sayonara, so long. Example: "They said their good-byes."