trustworthiness, good faith, guilelessness, transparency, earnestness, honor system, reliability, credibility, seriousness, impartiality, truthfulness, nobility, serious-mindedness, justice, sportsmanship, unassumingness, innocence, distressfulness, veracity
artlessness (part of speech: noun)
honesty, unsophistication, plainness, naturalness, un-artificiality, candor, artlessness, openness, directness, bluntness, plain-spokenness, callowness, frankness, broadness, trust, unaffectedness, unartfulness, candidness, straightforwardness, naivete, genuineness
- " Youâ€™ re splendid, Bob," she said, with a ring of sincerity that startled him.
- " Now, Emilia, let the sacrifice of my life be a proof to you of my sincerity. - "The Pacha of Many Tales", Captain Frederick Marryat.
- He loved sincerity, and the creed that came not from dry formalism, but from reason and from an honest heart. - "The Poems of Philip Freneau, Volume I (of III)", Philip Freneau.