Back in the Jam

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Across
  1. 2. very profitable
  2. 4. a puzzling situation or person
  3. 8. going on forever
  4. 10. reasonable, sensible
  5. 12. a part of piece of a greater whole
  6. 13. to yield, surrender
  7. 15. an agreement
Down
  1. 1. to spoil the appearance of
  2. 3. a movement from one form, state, style or place to another
  3. 5. to quote something
  4. 6. playful or mischievous tricks
  5. 7. calm and peaceful
  6. 9. rich harvest or good fortune
  7. 11. an idea
  8. 14. not harmful