Verbal, emotional, and psychological abuse are all part of domestic violence. You will be surprised to see what qualifies as verbal abuse. Did you know that the "silent treatment" is part of this passive aggressive kind of abuse.
Verbal abuse is like foreplay. It precedes the main event. It is also designed to steal away our self-esteem so we are afraid to move on. My ex used to say after beating me, "Why did you make me do that to you? What is wrong with you?" Then he told me how naive I was. To this day the word "naive" is a trigger word for me. Eventually I believed I was naive.
Google the concepts of "learned helplessness" and the "Stockholm syndrome."