/ Dictionary / Index N nonhero: Meaning and Definition of Find definitions for: non•he•ro Pronunciation: (non-hēr'ō), [key] — pl. -roes. antihero. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nonharmonic tone nonhuman Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language