/ Dictionary / Index D De Quincey: Meaning and Definition of Find definitions for: De Quin•cey Pronunciation: (di kwin'sē), [key] 1785–1859, English essayist. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. deputy sheriff der. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language