/ Dictionary / Index S su-: Meaning and Definition of Find definitions for: su- Pronunciation: [key] var. ofbefore sp: suspect. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Styx suable Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language