Less and ness

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Across
  1. 4. — Absence of light
  2. 5. — Feeling of sorrow
  3. 6. — Showing no fear
  4. 8. — Causing no injury
  5. 10. — Advance showing
  6. 12. — Refuse to follow orders
  7. 14. — Act of pardoning
  8. 16. — Without stopping
  9. 18. — Without expectation of success
  10. 19. — Lack of strength
  11. 20. — Without purpose or significance
  12. 22. — Complete quiet or calm
  13. 23. — Lack of good sense
Down
  1. 1. — State of being complete
  2. 2. — Done with ease
  3. 3. — State of happiness
  4. 7. — Not moving
  5. 9. — State of being empty
  6. 11. — State of zero gravity
  7. 13. — Intense or aggressive nature
  8. 14. — Feeling of affection
  9. 15. — Not required
  10. 17. — Lack of consideration
  11. 20. — Lack of trust
  12. 21. — Having no visible end