RSVP

RSVP is an initialism for the French phrase répondez s'il vous plaît, meaning "please respond." It is used in invitations to request confirmation of attendance at an event.

Origin and usage: The phrase originated in French etiquette and spread to English-language invitations in the 19th century, where it became a conventional instruction on formal invitations. Hosts use RSVP to estimate attendance for planning meals, seating, and space. Invitations may include a date by which to reply and may state "Regrets only" to indicate that the host only requires replies from those who cannot attend.

Response methods: Historically by mail or telephone; today commonly via online forms, email, or event platforms, which help organizers track responses and adjust arrangements.

Interpretation and scope: RSVP signals are sometimes optional; some invitations use "RSVP" as a universal request, while others use "Please RSVP" or "Please respond." In some contexts, guests treat it as a cue to respond promptly, though compliance varies.