/ Dictionary / Index U unreadable: Meaning and Definition of Find definitions for: un•read•a•ble Pronunciation: (un-rē'du-bul), [key] — adj. not readable; undecipherable; scribbled: His scrawl was almost unreadable. not interesting to read; dull; tedious; an unreadable treatise. extraordinarily difficult to read or comprehend; obscure; incomprehensible: an unreadable dream; an unreadable expression. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unreadable (Thesaurus) unread unready Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language