Related Clues:

• ''Let us know if you're coming''
• Word with along, on or about
• Say whether you'll come
• "Get over here, Fido!"
• "Please answer"
• "Ready or not, here I __!"
• Accept or decline
• Total, with ''to''
• Inform the host
• Part of a prospective bride's pile
• Say you'll go, say
• Letters on an invite
• It may involve regrets
• Command to a canine
• Letters before a phone no., perhaps