Wendy Watson from Wisconsin

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Across
  1. 2. the state of being able to think
  2. 8. incredible
  3. 9. a large vehicle (American English)
  4. 12. to slide like a snake
  5. 13. to speak of
  6. 14. unknown to you
  7. 15. to know something
  8. 16. to go towards something, to ... for
  9. 17. to have a very good time, to have a...
Down
  1. 1. a large vehicle (British English)
  2. 3. logically
  3. 4. to make a noise like a cat, or a slow motorbike
  4. 5. known to you
  5. 6. to admit to something
  6. 7. nature, landscape
  7. 10. fairness
  8. 11. hurt