It's All Relative

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Across
  1. 3. Adult male person
  2. 4. Male offspring
  3. 6. Older male sibling
  4. 7. Female parent
  5. 8. Female offspring
  6. 9. The parent off one's grandparents
  7. 11. The father of one's father
  8. 13. The mother of one's father
  9. 15. The brother of one's mother
  10. 16. Male child from birth to adulthood
Down
  1. 1. Adult female person
  2. 2. Female child from birth to adulthood
  3. 5. Male parent
  4. 6. Older female sibling
  5. 8. The sister of one's father
  6. 10. An extremely young child
  7. 11. The mother of one's mother
  8. 12. Younger female sibling
  9. 14. Younger male sibling
  10. 17. The father of one's mother