Magister
"Magister" was, according to the Third Doctor, "the Latin word for Master". The Master used the word as an alias to insinuate himself socially into the Devil's End community as a vicar, under the name "Victor Magister". Upon hearing the name, the Doctor immediately realised his nemesis' involvement. Olive Hawthorne instead recognised the name as being given to "the leader of a black magic coven". Jo Grant, on the other hand, had never heard the word in her life. (TV: The Dæmons)
The War Master during the Time War again used the Magister alias while posing as a village priest in the 1940s, as "Reverent Magister". (AUDIO: The Survivor) Later still, Missy called herself "Miss Magister" while working as a schoolteacher at a boarding school. (PROSE: Yes, Missy)
In one universe, the Doctor's oldest friend was named the Magistrate. (PROSE: The Infinity Doctors)
