Deceitfulness (9)
'deceitfulness' is the definition.
(thesaurus)
This is the entire clue.
(Another definition for duplicity that I've seen is " Double-dealing".)
'deceitfulness' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for perfidy that I've seen before include "Deceitfulness" , "Breach of faith" , "Betrayal" , "Duplicity" .)