Related Clues:

• "Sayonara!"
• Conversation stopper
• Doubly thankful to hear this as one leaves?
• Exit line
• So long, and thanks, thanks again
• Goodbye to a vehicle maker
• Good-bye to All That, originally first part of autobiography
• Bye!
• Cheerio!
• Cheery send-off
• "Bye now!"
• 'Later, bitches!'
• 'Bye for now'
• "Bye-bye," to a Brit
• 'TTFN'