oligarchy
US /ˈɑː.lɪ.ɡɑːr.ki/
UK /ˈɑː.lɪ.ɡɑːr.ki/

1.
oligarquia
a small group of people having control of a country, organization, or institution
:
•
The country was ruled by a powerful oligarchy.
O país era governado por uma poderosa oligarquia.
•
The company's decisions were made by a small oligarchy of executives.
As decisões da empresa foram tomadas por uma pequena oligarquia de executivos.