/ Dictionary / Index H hereunder: Meaning and Definition of Find definitions for: here•un•der Pronunciation: (hēr-un'dur), [key] — adv. under or below this; subsequent to this. under authority of this. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: hereunder (Thesaurus) heretofore hereupon 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