unit ?

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Across
  1. 4. wonder
  2. 7. more
  3. 8. weight
  4. 10. collect
  5. 11. desirable
  6. 12. heartfelt
Down
  1. 1. intrude
  2. 2. settle
  3. 3. settle
  4. 5. isolated
  5. 6. neglect
  6. 9. discord