Lewis Short
impūrĭtĭa | inp- (noun F) : (), , id.
* Uncleanness, vileness, impurity, = impuritas (anteand post-class.; very rare): trecentis versibus Tuas impuritias transloqui nemo potest,Plaut. Pers. 3, 3, 7: deliquentium, Mos. et Rom. Leg. Coll. 6, 4, 3.
Charlton T. Lewis, Charles Short, A Latin Dictionary