Related Clues:

• Attendance request
• Word of invitation
• Letters on a letter
• Skip, with "out"
• Do laps?
• Take a load off your feet
• Answer, as an invitation
• Use the sofa
• Reply, briefly
• Answer, briefly
• Use a couch
• Grab a chair
• Get back to the host or hostess
• It may consist of regrets
• Letters sometimes preceding a phone no.