Among the hidden

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Across
  1. 5. to amaze
  2. 7. in a high number
  3. 9. uncertain
  4. 10. forbiden
  5. 11. to keep hidden
  6. 12. to spread out
  7. 15. Causual
Down
  1. 1. to keep clean
  2. 2. to break into
  3. 3. revealing
  4. 4. a disturbance
  5. 6. to ruin
  6. 8. something thrown away
  7. 13. very tall
  8. 14. strong excitement