enrichment spelling

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Across
  1. 2. sticky
  2. 6. to need more of
  3. 9. side kick or friend
  4. 10. to understand
  5. 11. a secret agreement
  6. 14. dependent on inference
  7. 15. to put together in proper sequence
  8. 16. resembling a palace
Down
  1. 1. to gather objects
  2. 3. vehicle used to explore sea
  3. 4. adding numbers
  4. 5. to dive underwater
  5. 7. alikes or differences between two objects
  6. 8. informal conversation
  7. 9. to merge two things
  8. 10. giving in charge
  9. 11. to crash into something
  10. 12. very important
  11. 13. stick to quickly
  12. 17. begin