What is the Opposite ?

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Across
  1. 2. expensive
  2. 4. happy
  3. 5. bad
  4. 8. old
  5. 10. lucky
  6. 12. clean
  7. 14. right
  8. 15. long
Down
  1. 1. light
  2. 2. hot
  3. 3. high
  4. 4. fast
  5. 6. easy
  6. 7. full
  7. 9. free
  8. 11. early
  9. 13. possible
  10. 14. first