Emily Dickinson Lexicon

JUST'NESS, n.

1. Accuracy; exactness; as, the justness of proportions.
2. Conformity to truth; as, the justness of a description or representation.
3. Justice; reasonableness; equity; as, the justness of a cause or of a demand. [Justness is properly applied to things, and justice to persons; but the distinction is not always observed.]