/ Dictionary / Index H heinous: Meaning and Definition of Find definitions for: hei•nous Pronunciation: (hā'nus), [key] — adj. hateful; odious; abominable; totally reprehensible: a heinous offense. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: heinous (Thesaurus) Heinlein Heinrich Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language