Actor and comedian Bill Cosby on Monday sued seven women who had accused him of defaming them, saying they lied when they accused him of sexual assault. The countersuit, filed in U.S. district court in Springfield, Massachusetts, contends that the women defamed his "honorable legacy and reputation" by accusing him of sexual misconduct. More than 50 women have come forward to accuse the actor, best known for his role in the 1980s television hit "The Cosby Show," of sexually assaulting them after plying them with drugs or alcohol.