Silent letters

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Across
  1. 3. a old artefact, the is extremely expensive.
  2. 6. meat dealer
  3. 9. something you owe
  4. 10. something that protects you, back in the old day if you were rich
  5. 12. rhymes with snickers
  6. 13. were do people learn together
  7. 14. Something that is able to explode
Down
  1. 1. a highly uneducated idiot, that is a adjective
  2. 2. a sharp blade that was used in hundreds of years ago
  3. 4. another word for Doing up your seat belt
  4. 5. what do children(or badly behaved adults say)when there can’t hear
  5. 7. what can’t you have music without?
  6. 8. a insane idiot(starts with a P)
  7. 11. a chocolate company