The full form of RSVP is Repondez s’il vous plait.
The RSVP is abbreviated in french. This actually means ‘Reply if you please‘. This term is generally used at the end of invitations and formal letters being used across the globe. RSVP actually denotes the address of the sender where a reply can be given to, in response of the invitation being sent. This helps the sender in collecting the interests of the people joining the occasion and also to get the actual count of the people.