/ Dictionary / Index S sith: Meaning and Definition of Find definitions for: sith Pronunciation: (sith), [key] — adv., conj., prep. Archaic. since. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. site-specific sit-in 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