Saying the opposites

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Across
  1. 2. possible
  2. 5. defeat
  3. 6. tiny
  4. 8. innocent
  5. 11. unkind
  6. 13. optimistic
Down
  1. 1. simple
  2. 3. stupid
  3. 4. plausible
  4. 7. calm
  5. 9. fake
  6. 10. poor
  7. 12. normal