Silent Letters

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Across
  1. 6. a piece of land surrounded by water
  2. 7. culpable of or responsible for a specified wrongdoing
  3. 9. to promise with certainty
  4. 10. the short, thick first digit of the human hand
Down
  1. 1. not cheerful or smiling; serious
  2. 2. a passage between rows of seats in a building such as a church or theatre, an aircraft, or train
  3. 3. a mounted soldier in armor
  4. 4. a sum of money that is owed or due
  5. 5. a large building, typically of the medieval period
  6. 8. a young sheep