1. (n.) Double-dealing; deliberate deceptiveness; a twofold state.

2. (n.) 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.

3. (n.) The use of two or more distinct allegations or answers, where one is sufficient.

4. (n.) In indictments, the union of two incompatible offenses.