Related Clues:

• New room
• Peanut butter, e.g.
• Attachment
• Something extra
• Elaborate meal
• I Can't Believe It's Not Butter, e.g.
• Write a codicil
• Widened
• Progress in the garden
• Gambler's concern
• Investor's goal
• It comes in spurts
• Butter, e.g.
• House extension
• Enlarge a house