Crossword for mediumly smart peoples

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Across
  1. 5. just good enough
  2. 6. Looking back in __________
  3. 8. it’s what Mandela fought for
  4. 9. you go to school to do it
Down
  1. 1. an animal vegetarian
  2. 2. the thickness of a liquid
  3. 3. this makes perfect
  4. 4. we measure it in °C
  5. 7. used to represent a clan or tribe
  6. 10. the red infinity stone