1. Of or relating to one who is digustingly foul or filthy and often considered sexually promiscuous, but often contradictorily portrayed in a decidedly more pious fashion.
Quite obviously, skanktimonious derives from the contraction of skank, that of more popular vernacular, not the rhythmic dance, and sanctimonious.
Adjective to describe a judgmental woman who presents herself as an upstanding religious person, and talks a lot about "family values," but who has a double life that includes many violations of the principles she purports to uphold, including, but not limited to, sexual transgressions.
"Did you hear that Maisy cheated on her husband after the ChristianFellowship meeting last week?"
"That can't be possible. She is always saying people who go outside of marriage are condemned to life in hell."
"It is true. But ever since she got the implants, she has been a skanktimonious bitch."