Spelling Crossword

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Across
  1. 2. A scallop or a oyster with a hinged shell
  2. 4. At the beginning of the word
  3. 6. the opposite of close
  4. 7. Another word for come back
  5. 8. Another word for muscles
  6. 11. Another word for under
  7. 13. A group of three
  8. 14. Another word for competition
  9. 16. To get out of somewhere
  10. 17. To connect together
  11. 18. To build something
Down
  1. 1. The opposite of retain
  2. 3. The opposite of print
  3. 5. Another word for suffer
  4. 9. Another word for take away
  5. 10. The opposite of lock
  6. 12. The word affecting but without the suffix
  7. 15. To make something longer