/ Dictionary / Index I inadvertence: Meaning and Definition of Find definitions for: in•ad•vert•ence Pronunciation: (in"ud-vûr'tns), [key] — n. the quality or condition of being inadvertent; heedlessness. the act or effect of inattention; an oversight. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: inadvertence (Thesaurus) inadmissible inadvertency Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language