Pre- Re- Un- Mis-

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Across
  1. 2. - Not known or familiar.
  2. 5. - To go or come back to a place or person.
  3. 6. - To make a mistake in calculating or estimating something.
  4. 7. - To go back and visit a place or situation again.
  5. 8. - Not feeling or showing pleasure or contentment.
  6. 10. - To establish a connection again, especially after a period of disconnection.
Down
  1. 1. - To disconnect or remove the plug from an electrical device.
  2. 3. - Education for children before they enter formal school.
  3. 4. - To give the wrong idea or impression; to lead someone in the wrong direction.
  4. 9. - To see or show something before it is fully developed or complete.