Using -ous words

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Across
  1. 4. full of anxiety
  2. 7. a region full of mountains
  3. 10. full of thunder or very loud
  4. 11. full of humor
  5. 12. wide variety
  6. 13. full of space
  7. 15. absurd or silly
  8. 16. very well know
Down
  1. 1. giving money or time to helping others
  2. 2. full of hazards
  3. 3. full of venom
  4. 5. full of danger
  5. 6. full of caution
  6. 8. ready for an adventure
  7. 9. fierce
  8. 14. full of ambition