/ Dictionary / Index A adequacy: Meaning and Definition of Find definitions for: ad•e•qua•cy Pronunciation: (ad'i-kwu-sē), [key] — pl. -cies. the state or quality of being adequate; sufficiency for a particular purpose. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: adequacy (Thesaurus) adept adequate Related Content Daily Word Quiz: jaundice Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language