- (informal) Alternative letter-case form of
- Will you rsvp for the party?
- When did you rsvp to the wedding invitation?
Generally one rsvps to invitations and rsvps for events, as in the example sentences provided. An RSVP regrets only means that the sender will assume the invited people will come unless they reply.
Initialism of répondez s'il vous plaît (“please respond”).
- (at the end of a letter) Please reply.