What is the opposite

1234567891011121314151617181920
Across
  1. 4. bad
  2. 5. heat
  3. 9. add
  4. 11. simple
  5. 14. foreground
  6. 15. presence
  7. 17. blunt
  8. 18. lack
  9. 20. accidental
Down
  1. 1. luck fortune
  2. 2. best
  3. 3. exactly
  4. 6. night
  5. 7. accept
  6. 8. ceiling
  7. 10. beauty
  8. 12. bottom
  9. 13. comedy
  10. 16. above
  11. 19. beautiful