Related Clues:

• Wisecrack
• Doubt-conveying interjection
• 'Later'
• Squelch
• 'Hasta luego!'
• Exiter's exclamation
• 'Ciao!'
• 'So long!'
• 'See ya'
• 'Cheerio!'
• Rib-tickler
• Going away statement
• 'Excuse me...'
• 'Ta-ta!'
• Socialite's 'bye'