Cious and tious words

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Across
  1. 3. extremely fierce
  2. 6. It tastes delightful
  3. 7. Fruit and vegetables are ....
  4. 8. another word for polite
  5. 9. something that is lovely or gorgeous
  6. 11. A belief that is unprovable
  7. 12. To be aware of something
Down
  1. 1. another word for spiteful
  2. 2. A stone that is worth lots of money
  3. 4. motivated to succeed
  4. 5. Something that is very very bad
  5. 10. To be very careful
  6. 13. Very large