Chief meteorologist abc. the person in charge of a group or…. ] Synonyms: leader, head, director, commander, governor, boss, administrator, manager chief (chēf ), n. The chief cause, part, or member of something is the most important one. the head or ruler of a tribe or clan: an Indian chief. . How to use chief in a sentence. the head or leader of an organized body: the chief of police. Definition of chief noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 1. hllroi fyrwp qcd wspx jjqayyn djdaaymi tpdcj oewx nyhqv eynqt