uni - one

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Across
  1. 3. one of a kind; unsual or rare
  2. 5. moving in only one direction
  3. 6. an instance of saying the same words or sounds at the same time; a group that sounds like one.
  4. 8. having only one cell
Down
  1. 1. a one piece leotard and tights combination
  2. 2. a horse-like fabled animal that has one horn growing out of the middle of its forehead
  3. 3. one group
  4. 4. a one-wheeled vehicle on which the rider sits and peddles
  5. 5. one sided
  6. 7. to join together into one group