Latin, from requiescat in pace may he rest in peace
requiescat in American English
(ˌrekwiˈeskɑːt, -kæt)
noun
a wish or prayer for the repose of the dead
Word origin
[1815–25; ‹ L: short for requiescat in pace]This word is first recorded in the period 1815–25. Other words that entered Englishat around the same time include: artifact, coupon, norm, reamer, trolley