/ Dictionary / Index S sinner: Meaning and Definition of Find definitions for: sin•ner Pronunciation: (sin'ur), [key] — n. a person who sins; transgressor. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sinner (Thesaurus) sinless sinnet 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