Opposite adjectives

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Across
  1. 4. The opposite of ugly
  2. 6. The opposite of dirty
  3. 7. The opposite of thick
  4. 10. The opposite of difficult
Down
  1. 1. The opposite of old
  2. 2. The opposite of noisy
  3. 3. The opposite of hot
  4. 5. The opposite of sad
  5. 8. The opposite of low
  6. 9. The opposite of far
  7. 11. The opposite of fast