/ Dictionary / Index D diarist: Meaning and Definition of Find definitions for: di•a•rist Pronunciation: (dī'u-rist), [key] — n. a person who keeps a diary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: diarist (Thesaurus) diarchy diarrhea Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language