The Open Dictionary

RSVP

verb

UK/ˌɑː.res.viːˈpiː/
US/ˌɑːr.es.viːˈpiː/

Definitions of RSVP verb

  1. Intransitive

    To respond to an invitation, indicating whether one will attend an event.

    • I received the wedding invitation and have already RSVPed to confirm my attendance.

    • Please RSVP by next Monday if you plan to attend the seminar.

    • They require all attendees to RSVP two weeks before the event.