Is “Requiescat” a Scrabble word?
Yes
REQUIESCAT
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Requiescat
/ɹɛkwɪˈɛskæt/
noun
1.A prayer for the peaceful repose of the soul of a dead person