/ Dictionary / Index D dog-tired: Meaning and Definition of Find definitions for: dog-tired Pronunciation: (dôg'tīrd', dog'-), [key] — adj. utterly exhausted; worn out. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dog-tired (Thesaurus) dog tick dogtooth Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language