To dream of wanting vengeance represents a wish to restore an area of your life that has been negatively effected. It may also reflect a wish to get back your pride, dignity, self-respect. Feeling a lot of animosity towards someone. A wish to reverse an embarrassment that has happened to you. Vengeance may be a sign that you obsessed with revenge or harboring a lot of ill will towards a person or situation that has wronged you. A strong need to prove yourself once and for all.
Negatively, vengeance may be a sign that you are too concerned with getting someone back. It may also be a sign that you are being too arrogant about someone who has outdone you in some way. It may be best for you to just let a problem go.