Group One and Two

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Across
  1. 3. difficult to understand; partially hidden
  2. 6. shining; glowing
  3. 10. fear of heights
  4. 11. deeply moving; strongly affecting the emotions
  5. 14. spear; spike; javelin
  6. 15. a break; intermission
  7. 16. interruption; pause
  8. 19. hidden; covered; buried
  9. 20. a letter (form of communication)
Down
  1. 1. concise; to the point
  2. 2. concerned with letters; through correspondence
  3. 4. believing that people act only out of selfish motives
  4. 5. medicinal; curative
  5. 7. weakness; incapacity
  6. 8. middle class
  7. 9. tired; slow
  8. 12. calm; collected; self-possessed
  9. 13. sharp; pungent (used for smells and tastes)
  10. 17. ill-mannered
  11. 18. against orthodox opinion