/ Dictionary / Index U unintentional: Meaning and Definition of Find definitions for: un•in•ten•tion•al Pronunciation: (un"in-ten'shu-nl), [key] — adj. not intentional or deliberate: an unintentional omission from the list. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unintentional (Thesaurus) unintelligible uninterested Related Content Daily Word Quiz: apogee Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language