i Register
In some senses, inwardness is marked as obsolete. Watch for register when choosing this word.
noun
The characteristic of being inward or directed towards the inside.
The internal or true state; the essential nature.
the inwardness of conduct
Sense cannot arrive at th’inwardness of things.
Familiarity; intimacy.
Signior Leonato, let the friar advise you: / And though you know my inwardness and love / Is very much unto the prince and Claudio, / Yet, by mine honour, I will deal in this / As secretly and justly as your soul / Should with your body.
Earnestness; heartiness.
The prophets perpetually reminded their nation of the superiority of judgment and justice to any exterior ceremony like sacrifice. […] [W]hat was wanted was more inwardness, more feeling. This was given by adding mercy and humbleness to judgment and justice.