/ Dictionary / Index U unintelligible: Meaning and Definition of Find definitions for: un•in•tel•li•gi•ble Pronunciation: (un"in-tel'i-ju-bul), [key] — adj. not intelligible; not capable of being understood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unintelligible (Thesaurus) unintelligent unintentional Related Content Daily Word Quiz: cur Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language