inwardness in WordNet English dictionary

1. the choicest or most essential or most vital part of some idea or experience
   "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
   kernel  substance  core  center  centre  essence  gist  heart  heart and soul  inwardness  marrow  meat  nub  pith  sum  nitty-gritty 
   
2. preoccupation with what concerns human inner nature (especially ethical or ideological values)
   "Socrates' inwardness, integrity, and inquisitiveness"- H.R.Finch
   inwardness  internality 
   
3. the quality or state of being inward or internal
   "the inwardness of the body's organs"
   inwardness 
   
4. preoccupation especially with one's attitudes and ethical or ideological values
   "the sensitiveness of James's characters, their seeming inwardness"; "inwardness is what an Englishman quite simply has, painlessly, as a birthright"
   inwardness