Big word time

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Across
  1. 3. Someone who studies or collects butterflies and moths
  2. 6. Someone who expects the worse; someone who is inclined to expect poor outcomes
  3. 7. A collector of stamps
  4. 8. Someone who studies the branch of zoology that deals with reptiles and amphibians
  5. 11. Someone who sleepwalks
  6. 12. Someone who studies the branch of zoology that deals with shells
  7. 14. Someone who studies the branch of zoology that deals with fishes
Down
  1. 1. A cat lover
  2. 2. A collector of paper currency and banknotes
  3. 4. A hobby of exploring and studying caves
  4. 5. Someone who studies the branch of zoology that deals with birds
  5. 9. An interpreter of dreams
  6. 10. Someone who studies the branch of zoology that deals with insects
  7. 13. Some who is skilled at and/or enjoys solving crossword puzzles