/ Dictionary / Index D deathly: Meaning and Definition of Find definitions for: death•ly Pronunciation: (deth'lē), [key] — adj. causing death; deadly; fatal. like death: a deathly silence. of, pertaining to, or indicating death; morbid: a deathly odor from the sepulcher. —adv. in the manner of death. very; utterly: deathly afraid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: deathly (Thesaurus) deathlike death mask Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language