Inter-means between, among

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Across
  1. 6. occurring between two levels
  2. 7. between nations
  3. 8. to act amongst others
  4. 9. to cut between
Down
  1. 1. electronic networks
  2. 2. to come between
  3. 3. a break in between acts
  4. 4. to cut between
  5. 5. to come between other’s concerns
  6. 7. to break between