You should know the origin, and surprise - it’s Latin!

Per wikipedia: “The actual origin is unknown, but one of the first appearances of the word was in a second-century work by Roman physician Serenus Sammonicus… who in chapter 52 prescribed that malaria sufferers wear an amulet containing Abracadabra written in the form of a triangle.[12][13]

The power of the amulet, he claimed, makes lethal diseases go away.”