English by the Roots

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Across
  1. 2. speak or act at a moment's notice without preparation
  2. 3. between the stars in the Milky Way
  3. 5. a statement placed beside the main sentence
  4. 6. play for time or stall
  5. 7. full of trees or wooded
  6. 8. pertaining to stars
  7. 10. a person who loves trees
  8. 14. having the shape of a tree
  9. 16. throw between
  10. 17. study of rocks or stone
  11. 18. do at the same time
  12. 19. over a period of time
Down
  1. 1. people who are alive at the same time
  2. 4. extinct prehistoric tree with scaly bark
  3. 9. star shaped
  4. 11. transform a person or thing into a star or constellation
  5. 12. hard and stone like or rocky
  6. 13. oil from rocks
  7. 15. earliest stone age