To dream that you kill someone, indicates that heavy stress may cause you to lose your temper and self-control. Consider the person you have killed and ask yourself if you feel any rage towards him or her in your waking life. Your dream may be expressing some hidden anger. Alternatively, you may be trying to kill or put an end to an aspect of yourself that is represented by the person killed. Identify the characteristics of this person and ask yourself how you do not want to be like him or her.
To dream that you have been killed, suggests that your actions are disconnected from your emotions and conscience. Alternatively, the dream refers to drastic changes that are happening in your life. There is a characteristic that you want to get rid of or a habit that you want to end within yourself. Killing represents the killing off of old parts of yourself and old habits.
Please see also Murder.
To dream of killing a defenseless man, prognosticates sorrow and failure in affairs. If you kill one in defense, or kill a ferocious beast, it denotes victory and a rise in position.
Killing or wanting to kill often represents a desire for power or control, often based in feelings of powerlessness. Killing someone can mean:
You'd like to take power from whomever or whatever that person represents in your real life, perhaps so you can feel less powerless
You are angry at them in real life
You're feeling unwilling to deal with the problems or hassles you feel they cause you
Killing someone in self defense can mean you're feeling attacked somehow (mentally, emotionally, physically) or that you need to defend yourself or stand up for yourself somehow.Killing someone accidentally can mean you're afraid you'll accidentally hurt that person, that something you do may be detrimental to them somehow, or that your subconscious mind is thinking things through to make sure this doesn't happen.