Related Clues:

• 'Till we meet again'
• ''Cheerio!''
• 'Farewell'
• ''I'm outta here''
• Au revoir
• Doubled, a remark to birdie
• Tranquility's partner
• ''See ya''
• ''Ta-ta'' somewhere
• 'Ta-ta'
• 1960's catchword
• Pass, of a sort
• 'I'm outta here!'
• See 65-Across
• When doubled, a remark to birdie