prefixes

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Across
  1. 4. means to play again
  2. 7. to be without fear
  3. 8. prefix in the word triangle
  4. 9. means not wanting to talk with people
  5. 11. the study of the earth
  6. 13. prefix in the word semicircle
  7. 16. prefix in the word interaction
  8. 17. added to the end of a base word to form a new word
  9. 21. root word of unbreakable
  10. 22. the root word of the word unstoppable
Down
  1. 1. the root of the word biology
  2. 2. the root of the word gradual
  3. 3. one who travels by foot
  4. 5. suffix in the word unsuccessful
  5. 6. the root word of the word carelessly
  6. 10. root of the word hemisphere
  7. 12. added to the beginning of a base word to form a new word
  8. 14. means to heat before
  9. 15. plural of box
  10. 18. suffix in the word unwilling
  11. 19. suffix in the word agreeable
  12. 20. prefix in the work autobiography