répondez s'il vous plaît

For the unaware, that classic acronym comes from the French phrase Répondez s'il vous plait.

“I look forward to seeing you soon,” was the president’s almost smug, répondez s'il vous plaît, tucked into the final line of his missive to the speaker squelching her trip.

R.S.V.P. signifies "répondez, s'il vous plaît" or "an answer is requested."

R. S. V. P. The letters in the corner imply "Répondez, s'il vous plait;" meaning, "an answer will oblige."

The letters R.S.V.P. are simply the initials of the French words, Repondez s'il vous plait, meaning, "Reply, if you please."