Impediment Jinx

The Impediment Jinx is a spell which slows or stops an object or individual.

Known Uses

 * Madam Hooch used this spell to prevent Harry Potter and Draco Malfoy from colliding at the Quidditch pitch at Hogwarts.
 * Hermione Granger taught Harry Potter this spell to help him in the 1994 Triwizard Tournament. He used it in the Triwizard Maze of the Third Task, against the Acromantula and Blast-Ended Skrewt.
 * The following year, Harry later taught this to Dumbledore's Army as a defensive spell.
 * James Potter once used this on Severus Snape.
 * The jinx was used by Death Eaters Antonin Dolohov and Jugson against Harry, Hermione, and Neville Longbottom in the Battle of the Department of Mysteries.
 * During the Battle of the Astronomy Tower, Harry used this spell to distract Amycus Carrow from attacking Ginny Weasley.

Etymology
Impedimenta is devised from the Latin word,impedimentum, meaning "a hindrance"