The Most Surprising Harry Potter Fan Theories
The Etymology of the Word Abracadabra
You don't have to be a genius to realize the similarity between the Muggle word "abracadabra" and "Avada Kedavra." But this Reddit user links the resemblance to a relationship between wizards and muggles that existed before the Secrecy Statute was passed in 1692. Another user suggests that the curse was initially used to cure or kill diseases. This makes a lot of sense because, as the Huffington Post pointed out, at one moment in history, people thought that "abracadabra" could cure the symptoms of bubonic plague.
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