A leader or chief, often with absolute power.

A person who is the highest authority in a particular field.

किसी विशेष क्षेत्र में सर्वोच्च प्राधिकरण वाला व्यक्ति।

English Usage: She is considered the supremo in the world of fashion.

Hindi Usage: उसे फैशन की दुनिया में सुप्रीमो माना जाता है।