/ Dictionary / Index S sincerity: Meaning and Definition of Find definitions for: sin•cer•i•ty Pronunciation: (sin-ser'i-tē), [key] — pl. -ties. freedom from deceit, hypocrisy, or duplicity; probity in intention or in communicating; earnestness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sincerity (Thesaurus) sincere sinciput 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