Write the opposite

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Across
  1. 2. minus
  2. 5. back
  3. 7. positive
  4. 8. fall
  5. 10. down
  6. 12. increase
  7. 13. false
  8. 15. outer
  9. 16. receive
  10. 17. high
Down
  1. 1. polite
  2. 2. present
  3. 3. take
  4. 4. mean
  5. 6. complex
  6. 9. hot
  7. 11. freezing
  8. 14. sober
  9. 16. launch