Word Twins and Opposites

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Across
  1. 2. Joyful
  2. 5. Not laugh
  3. 6. Opposite of hot
  4. 7. Quick
  5. 8. Opposite of brave
  6. 13. Start
  7. 15. Tidy
  8. 17. Opposite of big
  9. 18. Not smart
  10. 19. Opposite of clean
  11. 21. Not bright
  12. 22. Opposite of strong
  13. 23. Giggle
  14. 25. Shiny
Down
  1. 1. Tough
  2. 3. Courageous
  3. 4. Opposite of hard
  4. 7. Buddy
  5. 8. Trade for money
  6. 9. Opposite of poor
  7. 10. Intelligent
  8. 11. Not wealthy
  9. 12. Opposite of begin
  10. 13. Opposite of sell
  11. 14. Not fast
  12. 16. Opposite of friend
  13. 17. Powerful
  14. 20. Unhappy
  15. 24. Warm
  16. 25. Large