Hello

Antonyms of hello:
adieu, bon voyage, congé, farewell, godspeed, good-bye.
Examples of usage:
  1. King paused, saying: " Hello, Jim.
    "The Everlasting Whisper", Jackson Gregory.
  2. " Hello, dear," Rosemary greeted her, wondering why Sarah had changed her mind and come to meet them.
    "Rainbow Hill", Josephine Lawrence.
  3. Then, catching sight of her face, Hello!
    "The Vision of Desire", Margaret Pedler.