Freak the mighty

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Across
  1. 4. Tough and aggressive young man
  2. 7. Apartment houses over-crowed and poorly maintained
  3. 9. Lacking knowledge
  4. 10. Concentrated; thorough
  5. 13. Something newly created
  6. 14. Stupid person
  7. 16. Something unfair and wrong
  8. 17. Very happy
  9. 18. Like a miracle; happening without any natural or scientific
  10. 19. Object that shows or embodies something
Down
  1. 1. A view or outlook
  2. 2. Put into a trance
  3. 3. Choices
  4. 5. Conducted in a hurried and chaotic way; full of fear or anxiety
  5. 6. Useful; practical; working
  6. 8. Violent or aggressive: ferocious
  7. 11. Informal term for a person's double
  8. 12. Trenched; rutted; grooved; wrinkled
  9. 15. Action taken to improve a medical disorder