Related Clues:

• Bye-bye
• Departure announcement
• Friendly greeting
• "Arrivederci"
• "Au revoir!" relative
• "So long!"
• Bye, somewhere
• Roman greeting
• It's said when taking off
• 'See you later!'
• Ciao cousin
• 'I'm history!'
• Ciao, in Chartres
• Farewell, to 10-Across
• It's usually bid