requiescat
nounUK /ɹɛkwɪˈɛskæt/ · US /ˌɹɛkwiˈɛskæt/
Etymology First word of the Latin phrase requiēscat in pāce (“may he/she rest in peace”). The Latin word requiēscat means "may he/she rest" and is a form of the Latin verb requiēscō (“to rest, repose”).
1
A prayer for the peaceful repose of the soul of a dead person