/ Dictionary / Index H hadn't: Meaning and Definition of Find definitions for: had•n't Pronunciation: (had'nt), [key] contraction of had not. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hadley chest Hadrian Related Content Daily Word Quiz: overture Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language