Words with the prefixes anti-, auto- and inter-

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Across
  1. 4. unfriendly towards other people
  2. 5. to communicate, work or spend time with others
  3. 6. the signature of a famous person
  4. 9. travelling from one city to another
  5. 10. connected in such a way that one thing has an effect on another
Down
  1. 1. medicine that can destroy harmful bacteria
  2. 2. able to destroy germs
  3. 3. involving more than one country
  4. 7. moving in the opposite direction to a clock’s hands
  5. 8. a book about a person’s life written by that person