“of, relating to, or based on an oligarchy” (Courtesy © Merriam-Webster) “Oligarchy… is a form of power structure in which power rests with a small number of people [Oligarchs]…distinguished by …wealth, family ties, …corporate, religious, or military control.” “Throughout history, oligarchies have often been tyrannical….” (Courtesy © Wikipedia). Today, Oligarchs are often Directors of multiple major corporations and official residents of several counties, particularly tax-havens.
[Closely related words: Oligarchy, Plutocracy, Kleptocracy, Aristocracy, Corporatocracy, Anocracy, Courtesy © Wikipedia]