Noun

• 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"

• 2. preoccupation especially with one's attitudes and ethical or ideological values;

  "the sensitiveness of James's characters, their seeming inwardness"

  "Socrates' inwardness, integrity, and inquisitiveness"

• 3. the quality or state of being inward or internal;

  "the inwardness of the body's organs"

• 4. preoccupation with what concerns human inner nature (especially ethical or ideological values);

  "Socrates' inwardness, integrity, and inquisitiveness"- H.R.Finch