Sort 3 Crossword -ful, -ous, -ious

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Across
  1. 2. disposing of things carelessly
  2. 4. antonym to terrible, awful
  3. 6. antonym to safe
  4. 7. you may bite your nails if you are this
  5. 8. amazing, great
  6. 11. many mountains
  7. 15. snakes can be these
  8. 16. someone who studies a lot
  9. 17. to be jealous
Down
  1. 1. antonym to coward
  2. 3. anger
  3. 5. crazy
  4. 9. very pleasing
  5. 10. achieving something
  6. 12. going against the rules
  7. 13. funny
  8. 14. done with force and energy