Your abuser usually doesn't do it where anyone else can witness it. It comes in many disguises. It consistently discounts your perceptions. No matter how cruel your partner is, she will deny that anything is wrong. Finally, physical abuse is always preceded by verbal abuse.
Verbal abuse is hurtful.
Especially when it's denied. Verbal abuse is manipulative and controlling. Verbal abuse is unpredictable. No matter how intelligent, careful, or perceptive you are, she'll always find a way to hit a blind spot you didn't even know you had. Verbal abuse is the issue in the relationship.