Related Clues:

• That sounds like a good buy, deserving gratitude at the double
• Such extra may come at the double on parting
• Fare well with such an extra double
• "Sayonara!"
• It renders a seed inactive
• Conversation stopper
• Doubly thankful to hear this as one leaves?
• Exit line
• 'g2g' follower
• "Bon voyage!"
• Nicer "Good riddance"
• Famous last word?
• Run past in discussion
• So long, and thanks, thanks again
• Goodbye to a vehicle maker