Pūre'ness, n.

n. The state of being pure; an unmixed state; separation or freedom from any heterogeneous or foreign matter, especially from that which might injure, vitiate, or pollute; clearness; simplicity; purity; innocence; genuineness; guilelessness; chasteness; as, the pureness of water or air; the pureness of gold or silver; pureness of heart, life, style, and the like. “Pureness of phrases in Terence.” Ascham.

May we evermore serve Thee in holiness and pureness of living. Common Prayer.