Definitions:

1. preoccupation especially with one's attitudes and ethical or ideological values noun
   • the sensitiveness of James's characters, their seeming inwardness
2. preoccupation with what concerns human inner nature (especially ethical or ideological values) noun
   • Socrates' inwardness, integrity, and inquisitiveness H.R.Finch
3. the quality or state of being inward or internal noun
   • the inwardness of the body's organs

Synonyms:

• internality
• substance