Causes confusion. A person who is affected by this Charm is said to be Confunded.
References from the canon
- Snape suggested that Harry, Ron, and Hermione were Confunded by Sirius Black into believing him innocent (PA21).
- The fake Moody used this charm to fool the Goblet of Fire into accepting Harry's name under a fourth school, suggesting that even sentient objects with thoughts could be fooled by the spell (GF17).
- Hermione used a Confundus Charm on McLaggen during Keeper tryouts in her sixth year (HBP11).
- Snape speculated that a Confundus Charm had been placed on Dawlish, who was known to be susceptible (DH1).
- Cast by Harry on each of the two wizards outside the main entrance of Gringotts (DH26).
- Delphi, the daughter of Lord Voldemort and Bellatrix Lestrange, confunded Amos Diggory and the staff at St. Oswald's Home for Old Witches and Wizards so they would believe she was "Delphini Diggory," Amos's niece and nurse. In reality, he never had a niece, and Delphi was just trying to use Amos to get her hands on the Experimental Time-Turner at the Ministry so she could change time and resurrect her father (CC3.21).
- In one alternate timeline after Albus Potter used the Experimental Time-Turner, Ron Weasley thought his nephew had been Confunded for thinking he was ever married to Hermione instead of his present wife, Padma Patil (CC2.9)
Magic Type Charms
Pronunciation con-FUN-doh, con-FUN-dus
Spellbook Dark Forces: A Guide to Self-Protection
"confundo" L. to mix up, jumble together, confuse, bewilder, perplex