Call of the Wild

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Across
  1. 3. someone who pretends to be ill
  2. 5. irresponsibility
  3. 6. demanding
  4. 8. absolutely necessary
  5. 10. difficult and tiring
  6. 11. extremely hungry
  7. 14. oddity
  8. 15. never ending
  9. 16. untouched
  10. 17. essential
  11. 18. lean
Down
  1. 1. skillful
  2. 2. shamefully
  3. 4. feelings of anxiety or dismay
  4. 7. excitable
  5. 9. instant
  6. 12. goal or desire
  7. 13. messages
  8. 14. in a manner intended to make someone less hostile