rsvp

[tucho58]

RSVP...I believe it means Regrets S'ill Vous Plait..should this be use to apologize for not attending an event in lieu of for attending it as it is currently the case.?

[woofgang]

it means respondez s'il vous plait ie please let them know if you are coming or not

[Ewood27]

I should add to woofgang's excellent answer that this is a formal request for a reply.  It is considered very bad manners if you don't reply to an invitation with RSVP on it, whether or not you intend to accept.

[SteveD]

Pedantic follow-up:

RSVP = R�pondez s'il vous pla�t

[lodekka]

The translation being please reply.

[SteveD]

R�pondez s'il vous pla�t = Please reply (i.e. let them know if you will be coming or not).

[Octavius]

It means...  why does everyone feel it necessary to answer a question over and over, when woofgang had quite appropriately covered it...?