Convoluted Words

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Across
  1. 4. Something lucky, or of good luck
  2. 8. In a secretive way
  3. 10. Science of numbers
  4. 11. lacking interest, languid
  5. 13. Allowing, but with some caveats
  6. 14. Something unthinkable, usually awful
  7. 15. the field of high-level engineering and bio-machinery
  8. 17. Holds candles on the roof
  9. 19. A certain set of steps, or dance, practice
  10. 20. Study of malfunctions in a system
Down
  1. 1. Pattern of rainbow colors
  2. 2. legendary horn, holds food
  3. 3. left to freeze up
  4. 5. happens quickly
  5. 6. out-dated term for a church
  6. 7. to bother annoyingly
  7. 9. in an unfeeling manner
  8. 12. anger, energy towards something
  9. 16. of great appeal, of great value
  10. 18. not planned, happening by chance