What is 'chief' in Latin?

Answer #1

A military leader is a Dux, which gives us the English Word Duke. A supreme military leader is a Dictator. A religious leader is a Pontifex, which is translated into English as Pontiff.

Answer #2

Caput, in the general sense, is the Latin equivalent of 'chief'. Dux is another Latin equivalent, in the sense of 'military leader'. Pontifex literally means 'bridge maker', but traditionally refers to 'spiritual leader'. Princeps is yet another Latin equivalent, in the sense of 'political leader'.