TEN and SENT

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Across
  1. 4. kept in custody, to have to stay after school
  2. 7. holding a permanent professorship
  3. 9. aware of the feelings of others
  4. 11. persistent
  5. 12. a belief or opinion that is held
  6. 13. capable of feeling
Down
  1. 1. the process of preserving something
  2. 2. permission, to allow
  3. 3. unable to defend
  4. 4. disagreement
  5. 5. incapable of feeling
  6. 6. to hang on to anger or bitterness
  7. 8. people who rent
  8. 10. tender emotions