sincerity Copy link Outline 1. sincērĭtas (soundness without admixture; in moral sense, INTEGRITY)2. simplĭcĭtas • sincerity: 1. sincērĭtas (soundness without admixture; in moral sense, integrity): v. soundness. 2. simplĭcĭtas: v. simplicity, frankness. Join: simplicitas, veritas, candor, Plin. Pan. 84, init. With s., v. sincerely.