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Across
  1. 2. a thing that is added or attached to something larger or more important
  2. 8. able to be hammered or pressed permanently out of shape without breaking
  3. 9. of or by telegraphs or telegrams
  4. 10. of or denoting circles that share the same center
  5. 12. ability of the brain to form and reorganize synaptic connections
  6. 13. showing great attention to detail
  7. 14. the quality of being easily shaped or molded
  8. 16. clever, original, and inventive
  9. 17. the theory that all knowledge is derived from sense-experience
Down
  1. 1. the rejection of all religious and moral principles
  2. 3. relating to or situated on the edge or periphery of something
  3. 4. branch of knowledge that deals with structure of language
  4. 5. unchanging over time or unable to be changed
  5. 6. the doctrine that all events, including human actions, are ultimately determined by causes external to the will
  6. 7. a belief or theory that opinions and actions should be based on reason and knowledge
  7. 11. make or become accustomed or used to something
  8. 15. very weak or slight