IPA: /ˈoʊvərˌlɔrd/
KK: /ˈoʊvərˌlɔrd/
A person who has power and control over others, often in a position of authority or dominance.
The overlord ruled the land with an iron fist, demanding loyalty from all his subjects.
Overlord → It is formed from "over-" (meaning above or beyond) and "lord" (from Old English "hlaford", meaning master or ruler). The word "overlord" refers to a master or ruler who has authority over others, particularly in a feudal context.
Think of someone who is a 'master' ('lord') who has power 'above' ('over-') others — that's why an overlord is a supreme ruler.
No commonly confused words.