/ Dictionary / Index S sedulity: Meaning and Definition of Find definitions for: se•du•li•ty Pronunciation: (si-d'li-tē, -dy'-), [key] — n. sedulous quality, application, or activity; diligence. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sedulity (Thesaurus) seductress sedulous Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language