Prefix, suffix crosswords

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Across
  1. 4. very helpful for a certain purpose
  2. 5. the quality of being kind
  3. 7. unable to do things without help
  4. 9. not making you feel relaxed and good
  5. 10. not possible
  6. 11. not happy
  7. 12. not safe; likely to cause harm
Down
  1. 1. full of attention and caution
  2. 2. how important something is
  3. 3. the feeling of being happy
  4. 4. without a real purpose or value
  5. 6. not polite
  6. 7. showing that you think something good can happen
  7. 8. without attention or concern
  8. 12. the state of having no light