Is a Passive-Aggressive person abusive?
Passive-aggressive behavior is, by definition, abusive - it contains a pronounced component of aggression. To consistently frustrate someone else's expectations and efforts is abusive.
Passive aggressive behavior, even without rage or violence, stops the flow of a healthy relationship based on communication. This is because the person will say one thing and do another. The other person is always on edge, because cause and effect of actions get so out of whack. A victim will try to understand the situation and talk to the abuser without getting the satisfaction of a reasonable answer. In fact, the abuser may stonewall any discussion of the topic at all.