Arania Exumai is a spell used to kill or, at least, blast back acromantulas or other large spiders.
Known uses
Harry Potter used this curse in the Forbidden Forest against the attacking acromantulas in 1993. He learned it from Tom Riddle, who had attempted to use it against Aragog in the memory Harry visited.
Etymology
From the Latin aranea, meaning “spider”, and exuo, meaning “I lay aside”.
Behind the scenes
- The spell was created for the film adaptation of Harry Potter and the Chamber of Secrets and does not appear in any of the novels.