Crossword - Silent letters

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Across
  1. 2. Person with supernatural insight
  2. 3. Ascend a mountain or ladder
  3. 5. Tissue that produces movement
  4. 7. Feeling uncertain
  5. 8. Put words on paper
  6. 9. Extend or pull tight
  7. 15. Proof of purchase
  8. 17. Medieval warrior in armour
  9. 18. Money owed
  10. 19. Gain or obtain, especially through effort
Down
  1. 1. A pattern of beats or sounds
  2. 3. Fortified building, often medieval
  3. 4. Land surrounded by water
  4. 6. Not obvious or easily noticeable
  5. 10. Truthful and sincere
  6. 11. From another country
  7. 12. Without a curve or bend
  8. 13. Destruction, especially of a vehicle
  9. 14. Sound made by blowing air
  10. 16. Response to a question