Sort 53.

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Across
  1. 5. - More soiled or contaminated
  2. 7. - More attractive or pleasing in appearance
  3. 9. - Showing courage or fearlessness
  4. 10. - More fashionable or stylish; having a lower temperature
  5. 12. - Less difficult or demanding
  6. 14. - Having a higher temperature or more intense heat
  7. 15. - Superlative form of close; nearest in proximity or distance
  8. 16. - Superlative form of easy; requiring the least effort or difficulty
  9. 19. - Exhibiting greater physical or mental strength
  10. 20. - Superlative form of happy; experiencing the greatest amount of joy or contentment
  11. 21. - Superlative form of calm; exhibiting the utmost serenity or tranquility
  12. 22. - Superlative form of hot; having the highest temperature or intensity
  13. 23. - Superlative form of weak; possessing the least strength or power
Down
  1. 1. - Experiencing more joy or contentment
  2. 2. - More mentally deranged or irrational
  3. 3. - Exhibiting less physical or mental strength
  4. 4. - Superlative form of dirty; most soiled or contaminated
  5. 6. - Superlative form of cool; most fashionable or trendy
  6. 8. - Most wild or irrational
  7. 9. - Superlative form of brave; showing the highest level of courage
  8. 11. - In proximity or nearer in distance
  9. 13. - Superlative form of strong; possessing the greatest physical or mental strength
  10. 17. - Superlative form of pretty; most pleasing to the eye
  11. 18. - More serene or tranquil