In the context of social invitations, RSVP is a process for a response from the invited person or people. It is an initialism derived from the French phrase Répondez s'il vous plaît meaning "Please respond" or literally, "Reply if you please". The acronym "RSVP" or the phrase "Répondez s'il vous plaît" are sometimes still used in current French to require confirmation of an invitation. In French, however, the acronym SVP, initialism for S'il vous plaît, is used to write "please", and RSVP could be written "répondez SVP".
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RSVP, regrets only
The phrase "RSVP, regrets only", or simply "Regrets only", is a popular modern variation that implies "if you do not reply, that will be taken as an acceptance."
More specifically, if most invitations can be assumed to be accepted, a "regrets only" RSVP will reduce the communication required by both the host and their guests. The phrase "Regrets only" refers to the assumption that a decline will be worded with some variation of "We regret we cannot attend..."; it follows that if the guest intends to attend the event then any "regrets" must be missing from the reply.
Save the date cards
Prior to sending the RSVP invitation, the host may mail out a "save the date" card to advise the date and location of the celebration. This may be used when the event will be held in a distant location to allow for travel plans, such as a wedding, christening or any other important event.
RSVP please
In recent years, the use of RSVP in the English language has spread outside of the discourse of highly formal correspondence and commonly figures in group emails. In this context, the acronym seems to have loosened its tie to its original meaning and is often understood simply as an abbreviation for "reply". Some writers therefore routinely use the phrase "RSVP please", which is a pleonasm.
Source of the article : Wikipedia
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