Duplicity

1. Doubleness of heart or speech; insincerity; a sustained form of deception which consists in entertaining or pretending to entertain one of feelings, and acting as if influenced by another; bad faith.
2. The use of two or more distinct allegations or answers, where one is sufficient.
3. Doubleness; a twofold state.
4. In indictments, the union of two incompatible offenses.