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"an rsvp" vs "a rsvp"

Both "an RSVP" and "a RSVP" are commonly used, but the correct form is "an RSVP." The use of "an" before "RSVP" follows the rule of using "an" before words that begin with a vowel sound.

Last Updated: March 19, 2024

an rsvp

This is correct. The use of "an" before "RSVP" follows the rule of using "an" before words that begin with a vowel sound.

Use "an RSVP" when referring to a response to an invitation. The use of "an" is based on the pronunciation of the acronym, where "RSVP" is pronounced as individual letters ("ar-es-vee-pee").

Examples:

  • Please send an RSVP by Friday.
  • I received an RSVP from most of the guests.

Alternatives:

  • a response to the invitation
  • a reply to the invitation
  • a confirmation of attendance

a rsvp

This is correct. While less common, some people use "a RSVP" due to the pronunciation of the acronym.

Although less common, some people use "a RSVP" when referring to a response to an invitation. This usage is based on the pronunciation of the acronym, where "RSVP" is pronounced as a word ("respondez s'il vous plait").

Examples:

  • Please send a RSVP by Friday.
  • I received a RSVP from most of the guests.

Alternatives:

  • a response to the invitation
  • a reply to the invitation
  • a confirmation of attendance

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