/ Dictionary / Index S subinfeudate: Meaning and Definition of Find definitions for: sub•in•feu•date Pronunciation: (sub"in-fy'dāt), [key] — -dat•ed, -dat•ing. to grant subinfeudation (to). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subindex subinfeudation Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language