IPA: /ˈpoʊ.tən.teɪt/
KK: /ˈpoʊtənˌteɪt/
A person who has a lot of power and authority, often ruling over others like a king or queen.
The potentate made decisions that affected the entire kingdom.
Potentate is derived from the Latin "potens" (meaning powerful) and the suffix "-ate" (indicating a state or condition). The word refers to a person who possesses power or authority, particularly in a sovereign or ruling capacity.
Think of someone who is 'powerful' ('potens') and in a state of authority ('-ate') — that's what a potentate is.