Related Clues:

• This extra is no greeting if it comes at the double
• One might go and say this at the double
• When two byes are going so it is said
• Is the Far East Ok? Then it's goodbye to it
• At the double at parting
• Sounds as if at last the buy is a good one
• Sounds as if there's forty in good health - sounds like a good buy like 27 across
• It's said to be good at parting for 22 down
• Such extra may come at the double on parting
• Fare well with such an extra double
• "Sayonara!"
• It renders a seed inactive
• Exit line
• 'g2g' follower
• "Bon voyage!"