Unit 16 gifted words

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Across
  1. 2. addition
  2. 4. bitterness
  3. 9. fate; destiny
  4. 10. study of old age
  5. 12. urgency
  6. 14. to limit
  7. 15. to irritate
  8. 16. to argue
Down
  1. 1. self-evident truth
  2. 3. miscreant
  3. 5. nearness; closeness
  4. 6. to baffle
  5. 7. session
  6. 8. hag
  7. 11. intractable
  8. 13. to change