Difficult words

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Across
  1. 2. serving a useful purpose
  2. 5. full of Life and energy
  3. 9. to hold something tightly
  4. 10. hulled oats
  5. 12. very bad or unpleasant
  6. 13. related to the care of children
  7. 14. an intense blinding light
  8. 16. to travel regularly between workplace and home
  9. 18. enthusiasm
Down
  1. 1. medications
  2. 3. a temporary loss of consciousness
  3. 4. to spread through and be easy to notice
  4. 6. to throw something violently
  5. 7. thwart
  6. 8. brightly colored and likely to draw attention
  7. 11. into or connected to a vein
  8. 15. to use something effectively
  9. 17. a soft, thick mass of mixture