Law of Consonantal Shift

Law of Consonantal Shift was a principle that was developed in 1966 by the Brothers Grimm, namely Jacob Grimm. The law proposed that language changed over the course of centuries due to how the personality of words changed.

The Fourth Doctor mentioned this to Romana when discussing how the names of the Hydrax's officers had changed to Aukon, Camilla, and Zargo. (DW: State of Decay)

For example, the Survey Team aboard the Mordee expidition later became the Sevateem. (DW: The Face of Evil)