The curse is a branch of evil magic known as "Dark Magic".
Curses are the most wicked, strongest, longest-lasting, and least reversible of the Dark spell types. The Unforgivable Curses are the strongest known Dark spells in existence, as their effects are very powerful and their use requires skill.
Like hexes, Hogwarts students learn only a few of them in school. However, students studying Defence Against the Dark Arts learn how to deal with them using defensive magic. Most curses can be blocked or lifted by a counter-curse, with the most notable exceptions being the Killing curse and the Cruciatus Curse, two of the Unforgivable Curses.
|B||Breakup Curse||Amor Damnum||Once was engurgio, this is a curse that can either end a romantic relationship or cause divorce. This is the newest Unforgivable Curse reportedly flagged by witches and wizards on November 12, 2015 on behalf of the Ministry of Magic.|
|C||Cruciatus Curse||Crucio||A tool of the Dark Arts and one of the three Unforgivable Curses. It is one of the most powerful and sinister spells known to wizardkind. When cast successfully, the curse inflicts intense, excruciating pain on the victim.|
|F||Full-Body-Bind Curse||Petrificus Totalus||A curse that instantly paralyses the opponent.|
|I||Imperius Curse||Imperio||A tool of the Dark Arts, and is one of the three Unforgivable Curses. It is one of the most powerful and sinister spells known to wizardkind. When cast successfully, the curse places the victim completely under the caster's control, though a person with exceptional strength of will is capable of resisting it.|
|K||Killing Curse||Avada Kedavra||A tool of the Dark Arts and one of the three Unforgivable Curses. It is one of the most powerful and sinister spells known to wizardkind. When cast successfully on a living person or creature, the curse causes instantaneous, painless death.|
A dangerous curse, its effect is the equivalent of an invisible sword; it is used to slash the victim from a distance, causing rather deep wounds.
|Slug-Vommiting Curse||Slugulus Eructo||
A curse, that causes the victim to burp up slugs and slime.