oligarchic

oligarchy ol‧i‧gar‧chy [ˈɒlgɑːki ǁ ˈɑːlgɑːrki, ˈoʊ-] noun oligarchies _PLURALFORM

1. [uncountable] when a country is ruled or controlled by a small group of people, usually from the same social class:

• Oligarchy took over from democracy.

2. [countable] a country, organization, industry etc controlled by a small group of people, or the group who control it:

• The industry is dominated by an oligarchy of three oil companies.

— oligarch noun [countable] :

• the changing alliances of Russia's corporate oligarchs

— oligarchic also oligarchical adjective :

• the dominance of a small oligarchical group of businessmen