/ Dictionary / Index H hadst: Meaning and Definition of Find definitions for: hadst Pronunciation: (hadst), [key] — v. Archaic. a 2nd pers. sing. pt. of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hadrosaur hae Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language