Related Clues:

• Write a letter to the editor, say
• Accept an invitation
• Say 'I'll be there'
• Give an answer
• Have a poor poker face
• Counterargue
• Reply
• "Let us know," on an invitation
• Letters for an invitee
• Sign up with again
• Invitation initials
• Antiphon
• Request from a party leader
• Retort
• 15-21-13-1-18-6