fiefdom

1. (historical) The estate controlled by a feudal lord.Examples: "The duke's fiefdom had been greatly expanded as a reward for his dutiful military service on behalf of the king."; ""If you wish to offer any of my vassals fiefdoms or positions in your new kingdom, they have my leave to accept. I promised them that when they came with me.""Synonyms: fiefcountablehistoricaluncountable

2. (by extension, chiefly derogatory) Any organization in the control of a dominant individual.Examples: "“[Bill Clinton] was just walking around, looking in all the offices, like he was surveying his fiefdom. He had a big grin on his face.”"; "Hollande told cheering supporters in his rural fiefdom of Corrèze in south-west France that he was best-placed to lead France towards change, saying the vote marked a "rejection" of Sarkozy and a "sanction" against his five years in office."; "Bankrupt cryptocurrency exchange FTX was run as the “personal fiefdom” of founder Sam Bankman-Fried, with one of the company’s units spending $300m on real estate in the Bahamas for the use of its executives, a court heard on Tuesday."broadlycountablederogatoryuncountable