/ Dictionary / Index S sufficiency: Meaning and Definition of Find definitions for: suf•fi•cien•cy Pronunciation: (su-fish'un-sē), [key] — n. the state or fact of being sufficient; adequacy. a sufficient number or amount; enough. adequate provision or supply, esp. of wealth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sufficiency (Thesaurus) suffice sufficient Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language