Pure-blood,blood traitors

Blood traitor is a derogatory term commonly used by elite pure-blood families to describe witches or wizards that sympathises with the non-magical community and/or willingly associates with those who are also blood traitor or Muggle-born. Other similar terms include Muggle-lover, Mudblood-lover, Dunglicker, Scumsucker, and Mudwallower], all of which refer disparagingly to those who are comfortable in the company of Muggles and/or Muggle-borns, who prejudiced wizards and witches believe are dirty and inferior.