Is “Quietus” a Scrabble word?
Yes
QUIETUS
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 Quietus
/kwʌɪˈiːtəs/
noun
1.A stillness or pause; something that quiets or represses; removal from activity.
2.Death.
3.Final settlement (e.g., of a debt).