Anti-, Semi-, Pro-, Ad-

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Across
  1. 4. a word that fills in for a noun
  2. 7. a substance to kill microorganisms
  3. 9. to announce and call attention to
  4. 10. free from contamination
  5. 11. to announce in a formal manner
  6. 12. an exciting or unusual experience
  7. 13. of deep meaning
  8. 14. twice a week
Down
  1. 1. forseeing and preparing for possible problems
  2. 2. an event that is less important than expected
  3. 3. partly formal, clothing a bit dressier than work clothes
  4. 5. to accept or allow
  5. 6. twice a year
  6. 8. recommendations
  7. 10. something that relieves or counteracts