isla got up and yelled "Confundo" as she pointed her wand at james
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Confundo (Confundus Charm)
Pronunciation: con-FUN-doh (IPA: /kʌn.ˈfʌn.dəʊ/)
Description: Causes the victim to become confused and befuddled.
Seen/Mentioned: First mentioned in Harry Potter and the Prisoner of Azkaban, when Severus Snape suggests that Harry and Hermione have been Confunded so that they will believe Sirius Black's claim to innocence. In Harry Potter and the Goblet of Fire, it is suggested that the Confundus Charm is responsible for the Goblet choosing a fourth Triwizard contestant. It is first seen in action when Hermione Granger uses it on Cormac McLaggen during Quidditch tryouts in Harry Potter and the Half-Blood Prince. The Confundus Charm is used multiple times in Harry Potter and the Deathly Hallows including: Severus Snape on Ministry of Magic Official John Dawlish, Harry Potter while under his Invisibility Cloak on two Gringotts wizard guards who are wielding Probity Probes, and again by Severus Snape on Mundungus Fletcher under orders from Albus Dumbledore. While under the influence of the Confundus Charm, Mundungus then "suggests" to the Order of the Phoenix they use seven Harrys to confuse Voldemort while they move him from Number Four Privet Drive to The Burrow. The Confundus Charm is also used in the epilogue by the adult Ron Weasley as the means used to pass his Muggle driving exam.
Etymology: The word "confundus" appears to be derived from the Latin confundere, meaning "to confuse; to perplex", whereas confundo means "I confuse".