Muggle-lover

"You've picked the losing side, Potter! I warned you! I told you, you ought to choose your company more carefully, remember? When we met on the train, first day at Hogwarts? I told you not to hang around with riffraff like this! Too late now, Potter! They'll be the first to go, now the Dark Lord's back! Mudbloods and Muggle-lovers first! Well – second – Diggory was the f–"

- Draco Malfoy to Harry Potter after Lord Voldemort’s return

"Muggle-lover" is a disparaging term for a wizard or witch who holds no prejudice against Muggles or Muggle-borns. The more commonly-used term for such an individual is "blood traitor". Such terms are used by elitist pure-bloods who believe that Muggles are greatly inferior to themselves and somehow dirty.

Draco Malfoy used the term in 1995, shortly after Lord Voldemort's return and the murder of Cedric Diggory. He told Harry Potter that those like Harry's closest friends, "Mudblood" Hermione Granger and "Muggle-lover" Ron Weasley, would be the Dark Lord's first targets. He then corrected himself, as Cedric had been Voldemort's first victim, and was swiftly cursed by Harry, Ron, Hermione, and Fred and George Weasley.

Appearances

 * Harry Potter and the Chamber of Secrets
 * Harry Potter and the Goblet of Fire