Rightness, n.
Etymology: [AS. richtnes.]
.
Straightness; as, the rightness of a line. Bacon.
2. The quality or state of being right; right relation. The craving for rightness with God. J. C. Shairp.
Shades of meaning
Fernald has no entry of its own for rightness; he lists it under virtue.
He lists it without comment; the entries above explain its neighbors.