chief

(noun) a person who is in charge. Synonyms: head, top dog. Example: "The head of the whole operation."

(noun) a person who exercises control over workers. Synonyms: foreman, gaffer, honcho, boss. Example: "If you want to leave early you have to ask the foreman."

(noun) the head of a tribe or clan. Synonyms: headman, tribal chief, chieftain.

(adj) most important element. Synonyms: chief(prenominal), main(prenominal), primary(prenominal), principal(prenominal), master(prenominal). Examples: "The chief aim of living." "The main doors were of solid glass." "The principal rivers of america." "The principal example." "Policemen were primary targets." "The master bedroom." "A master switch."