prefix and suffix

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Across
  1. 3. kindness
  2. 5. interact
  3. 7. fearless
  4. 8. postpone
  5. 10. superstar
  6. 11. comfortable
  7. 13. attraction
  8. 15. humor
  9. 16. wooden
Down
  1. 1. disagree
  2. 2. enjoyment
  3. 4. misfire
  4. 6. extraodirary
  5. 8. prefix
  6. 9. submarine
  7. 10. friendship
  8. 12. quickly
  9. 14. nonsense
  10. 16. higher