Bitter- (of people or their feelings or behavior) angry, hurt, or resentful because of one's bad experiences or a sense of unjust treatment. Vivian Halliwell will be the first to admit that she's the ultimate definition of a bitter bitch. And rightfully so. Surviving an explosive past, Vivian has guarded her heart with steel walls and a barbwire attitude. Only letting a handful of people close to her, she has built a life that suits her just fine...