The term 'FEELING OF HOSTILITY' can be summarized as the emotion of ANGER. ANGER is an emotion characterized by feelings of intense displeasure, hostility, and antagonism. It is often associated with strong negative reactions such as shouting, physical aggression, and other forms of destructive behavior. ANGER can be caused by a variety of factors, including frustration, fear, injustice, or hurt. It is a normal emotion that everyone experiences at some point in their lives, but it can become problematic if it is not managed properly.