Related Clues:

• 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!"
• 'Bye for now'
• "Bye-bye," to a Brit
• So long returning at first and at last
• ''Bye now!''
• "Later," in London
• 'Laters'