Noun
The quality or state of being rightful; accordance with right and justice.
Moral rectitude; righteousness.
Source: Webster's dictionaryRightfulness hath two fair properties: it is right and it is full. Julian of Norwich
Here I saw verily that sin is no deed: for in all this was not sin shewed. And I would no longer marvel in this, but beheld our Lord, what He would shew. And thus, as much as it might be for the time, the rightfulness of God's working was shewed to the soul. Julian of Norwich
he feels he is in the right Source: Internet
the rightfulness of his claim Source: Internet