A curse is an expressed wish for misfortune to befall an entity, often believed to be activated through supernatural means such as spells or rituals. Curses can aim for revenge, protection, or to inflict harm and have been practiced across various cultures, sometimes using effigies that symbolize the victim. The potency of a curse can be influenced by the authority of the person casting it, and there are methods to lift or break curses, including prayer and positive thinking.