Related Clues:

• Hi (or bye!)
• Bye!
• Cheerio!
• Hi! - bye!
• That length — goodbye!
• Italian salutation
• Cheery send-off
• "Bye now!"
• Spies connected with ring for so long
• 'Don't be a stranger'
• 'Later, bitches!'
• Copper reported parting words
• 'Bye for now'
• "Bye-bye," to a Brit
• 'TTFN'