severer
noun/ˈsɛvəɹə(ɹ)/
Etymology From sever + -er.
1
One who severs.
- They received this name from the jealousy of their rivals, who thereby intimated that they were severers of the unity of the Algonquin nation, as a people who were setting up an independent government […]1862, Sir Daniel Wilson, Prehistoric man, researches into the origin of civilisation, page 133: