Mystery Crossword Puzzle

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Across
  1. 1. Back of one's neck
  2. 3. As well as
  3. 4. Insensitive
  4. 8. Person, place, thing
  5. 11. A rewording of something
  6. 12. In addition
  7. 13. Defile
  8. 15. Clammy
  9. 16. Alternative
  10. 18. Stubborn
  11. 20. Attitude
Down
  1. 2. Used to connect clauses
  2. 5. Despite
  3. 6. Willful
  4. 7. Preceding, a noun or pronoun
  5. 9. Pester
  6. 10. Action
  7. 14. Talk rapidly and continuously
  8. 17. Although
  9. 19. Lukewarm