-ful and -less

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Across
  1. 5. experiencing zero gravity
  2. 7. alone
  3. 8. defeated
  4. 10. stone-faced
  5. 11. thankful
  6. 12. useful
  7. 14. infinite
  8. 15. nice to look at
  9. 16. happy
  10. 18. great
Down
  1. 1. you might feel this way after exercise
  2. 2. unguarded
  3. 3. irresponsible
  4. 4. good at finding clever solutions to problems
  5. 6. white
  6. 9. lacking guilt
  7. 13. sore
  8. 17. brave