1. Impurity; admixture. Cf. INSINCERITY 1.
1668. Boyle, Physiol. Ess., 108. A Spirit of Sea-Salt may without any unsincerity be so prepar’d, as to dissolve the body of crude Gold.
2. Lack of sincerity; = INSINCERITY 2.
1646. Hammond, Tracts, 42. An argument of the unsincerity of that contrition.
1692. Norris, Two Treat. Div. Light, I. 67. See the Inconsistency and Unsincerity of this Writer!
1707. Reflex. upon Ridicule (1717), II. 189. All this opens a prospect to the Bottom of their Hearts, and manifests their Unsincerity.
