inwardness

noun4

1. •
   The characteristic of being inward or directed towards the inside.
2. •
   (no longer used) The internal or true state; the essential nature.

   • Sense cannot arrive at th’inwardness of things. — 1642
3. •
   (no longer used) Familiarity; intimacy.
4. •
   (no longer used) Earnestness; heartiness.