People
Animagus (pl. Animagi)
Apparator
blood traitor (hyphenated when used as an adjective, as in 'Your blood-traitor pal')
curse breaker (PoA) or Curse-Breaker (OotP) or curse-breaker (HBP)
half-blood
Legilimens
Metamorphmagus (pl. Metamorphmagi)
Mudblood
Muggle (NB ‘mUggle’ occurs in Hermione’s hate-mail in GoF, cobbled together from newspaper headlines, but probably shouldn’t be taken as canon evidence for a small ‘m’.)
Muggle-born
Occlumens
Parselmouth
pure-blood (NB this is a UK/US difference - it’s always pure-blood in the UK books, but sometimes pureblood in the US editions.)
Seer
Squib
the Wandless
witch
wizard
Apparator
blood traitor (hyphenated when used as an adjective, as in 'Your blood-traitor pal')
curse breaker (PoA) or Curse-Breaker (OotP) or curse-breaker (HBP)
half-blood
Legilimens
Metamorphmagus (pl. Metamorphmagi)
Mudblood
Muggle (NB ‘mUggle’ occurs in Hermione’s hate-mail in GoF, cobbled together from newspaper headlines, but probably shouldn’t be taken as canon evidence for a small ‘m’.)
Muggle-born
Occlumens
Parselmouth
pure-blood (NB this is a UK/US difference - it’s always pure-blood in the UK books, but sometimes pureblood in the US editions.)
Seer
Squib
the Wandless
witch
wizard