/ Dictionary / Index S suppletory: Meaning and Definition of Find definitions for: sup•ple•to•ry Pronunciation: (sup'li-tôr"ē, -tōr"ē), [key] — adj. supplying a deficiency. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. suppletive suppliance 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