supercabinet

noun

su·​per·​cab·​i·​net ˌsü-pər-ˈkab-nit 

-ˈka-bə-

plural supercabinets

: a political cabinet with power over another subordinate cabinet

Option one was to create a supercabinet composed of five or six Cabinet officers to oversee the programs developed by the entire Cabinet.

—Shirley Anne Warshaw

Prince Konoye was persuaded that the best way to operate in crisis was to establish a supercabinet of five ministers: himself, the war minister, the navy minister, the foreign minister and the minister of finance.

—Edwin P. Hoyt

Word History

First Known Use

1874, in the meaning defined above