Crossword Challenge

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Across
  1. 1. Rhymes with bat
  2. 4. H2O
  3. 5. 16th President
  4. 7. Nemo
  5. 8. 1st President
  6. 9. Contradict
Down
  1. 2. Writer
  2. 3. unfeeling
  3. 6. Difficult to understand
  4. 7. Opposite male