A series of hard crossword words

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Across
  1. 4. observe inconspicuously
  2. 6. cloth decorated with patterns sewn on with thread.
  3. 8. never ending.
  4. 9. behaving or dressing according to the latest trend.
  5. 10. signs.
  6. 12. cannot be fully understood.
  7. 13. second to last.
  8. 14. something harmful or evil is going to happen.
  9. 15. happened in order.
Down
  1. 1. french for describing the act of untying a knot.
  2. 2. an organized body of people with a particular purpose.
  3. 3. unlucky.
  4. 5. a caretaker of an apartment complex or a hotel
  5. 7. causing discomfort or unhappiness.
  6. 11. baffling very puzzling.