Ron: "Know any spells?"
Harry: "One, but it's not powerful enough for all of them."
Ron: "Where's Hermione when you need her?"
Harry: "Let's go! Arania Exumai"
— Harry saving himself and Ron from the Acromantula[src]

The Spider Repelling spell (Arania Exumai) is a charm used to blast away Acromantulas or other large spiders. If the spell misses and strikes stone, it will produce a large black scorch mark, and thus is not recommended for use on humans, although casting through or along a human produces no ill effect so long as a spider is struck.[1]


During the 1987–1988 school year, Jacob's sibling and their friends set out to discover another Cursed Vault, which they later suspected to be near the Spider's Lair in the Forbidden Forest. Patricia Rakepick, a consultant at Hogwarts School of Witchcraft and Wizardry at the time, gave Jacob's sibling a private lesson on this spell,[2] which they later used against the Acromantula that guarded the Vault in the Forbidden Forest.[3]

Known practitioners


Arania is derived from the Latin aranea, meaning "spider". Exumai is possibly derived from exuo, Latin for "I lay aside" or "I refuse". Alternatively, the pronunciation of exumai is somewhat similar to that of exime, a conjugation of eximo, Latin for "I banish". Together, the incantation can mean "I lay aside the spider" or "I banish the spider".

Behind the scenes


Notes and references

  1. 1.0 1.1 1.2 Harry Potter and the Chamber of Secrets (film)
  2. 2.0 2.1 2.2 Harry Potter: Hogwarts Mystery, Year 4, Chapter 14 (The Spider's Lair) - Private Transfiguration Lesson "Arania Exumai"
  3. Harry Potter: Hogwarts Mystery, Year 4, Chapter 16 (The Forest Vault)
  4. 4.0 4.1 Harry Potter and the Forbidden Journey
  5. Harry Potter Wiki - Vera Verto talk page and Alarte Ascendare talk page
  6. 18px-Wiktionary_small.svg.png eximo on Wiktionary
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