solve

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Across
  1. 4. tire out completely
  2. 5. a humorous or malicious deception
  3. 7. to convert a coded message to an understandable language
  4. 9. to make something longer
  5. 10. fall behind
  6. 11. not allowing air to pass or escape through
  7. 12. opposite in position
  8. 14. a long narrow crack
  9. 15. write quickly
  10. 16. a rounded vault forming the roof of a building of a structure
Down
  1. 1. come into a place where one is not invited
  2. 2. to underestimate the value of something
  3. 3. melodious
  4. 6. in or as if in deep sleep
  5. 7. the period of life in which a person is old and weak
  6. 8. a high piece of artillery used in warfare
  7. 9. something beautiful and delicate
  8. 13. instruct or urge to do something
  9. 14. limited in size or extent
  10. 16. to lower the head or body to avoid a blow