good-bye
1. [ noun ] a farewell remark
Synonyms: adios adieu cheerio au_revoir auf_wiedersehen good_day bye-bye good-by goodby goodbye bye sayonara so_long arrivederci
Examples:

"they said their good-byes"

Related terms: farewell
2. [ interjection ] term of endearment
Synonyms: pip good-by lovie
Similar spelling:   good-by
  goodbye
  Godby
  goodby
  Godbey
  Godbee
  go_deep