Is “Perfidy” a Scrabble word?
Yes
PERFIDY
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 Perfidy
/ˈpɜː.fɪ.di/
noun
1.A state or act of violating faith or allegiance; violation of a promise or vow, or of trust
2.Specifically, in warfare, an illegitimate act of deception, such as using symbols like the Red Cross or white flag to gain proximity to an enemy for purposes of attack.
3.A state or act of deceit.
Synonyms: betrayal, treachery, perfidiousness