/ Dictionary / Index C chiefly: Meaning and Definition of Find definitions for: chief•ly Pronunciation: (chēf'lē), [key] — adv. primarily; essentially: He phoned chiefly to let us know he was feeling better. mainly; mostly: This dish consists chiefly of noodles. —adj. of, pertaining to, or like a chief: his chiefly responsibilities. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: chiefly (Thesaurus) chief justice chief master sergeant Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language