1. An evil woman that secretly conspires to do something considered immoral, illegal, or harmful. She is highly intelligent and crazy.
2. Nancy Pelosi
As soon as Obama became unpopular, Nancy Pelosi criticized his policies to distance herself from him. She is a conniving bitch.
a bitch who connives; one who conspires
Oh em gee! She is such a conniving bitch! I can't believe she made me do that!