Word Game

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Across
  1. 2. attack (a place or person) continuously
  2. 7. having great power, influence, or effect
  3. 8. move downward, typically rapidly and freely without control
  4. 9. a complex system of nerves and networks in the brain
  5. 10. elating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something.
Down
  1. 1. the complete range or scope of something
  2. 3. give up (power or territory)
  3. 4. (of a natural force) sweep over (something) to surround
  4. 5. the quality of seeming reasonable or probable.
  5. 6. fitting in well with a person's needs, activities, and plans.