Protego Horribilis

Type: Charm

Pronunciation: pro-TAY-goh horr-uh-BIHL-ihs

Description: A powerful shield charm against dark magic.

Seen/Mentioned: Cast by Professor Flitwick in an attempt to strengthen the castle's defences in the Battle of Hogwarts.

Etymology: Latin Protego, "I protect", and Horribilis, "horrible , frightful, dreadful".