Definition, synonyms and related words
A reply to an invitation.
"The new internet standard uses RSVP to reserve bandwidth before data transmission begins."
Initialism of resource reservation protocol.
In plain English: RSVP is an invitation request asking you to let the host know if you will be coming to their event.
"The rsvp list for the wedding party included fifty names from our family and friends."
To reply to an invitation.
"Please write your name in either all caps or lowercase when you rsvp to the invitation."
To reserve a place
Alternative letter-case form of RSVP
In plain English: To RSVP means to reply and let someone know if you will be coming to an event.
"Please rsvp by Friday so we can confirm your attendance at the wedding."
RSVP is an orthographic borrowing from the French phrase répondez s'il vous plaît, which literally means "please reply." The English usage adopted this formal request for a response directly as an abbreviation.