Back in the Jam

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Across
  1. 2. reasonable; sensible
  2. 6. an agreement, usually a formal one
  3. 7. to yield; to surrender; to give in
  4. 9. a part or piece of something greater
  5. 11. going on forever; having no boundaries
  6. 13. calm and peaceful
  7. 14. a rich harvest or sudden good fortune
Down
  1. 1. very profitable
  2. 3. playful or mischievous pranks; shenanigans
  3. 4. to spoil the appearance of something
  4. 5. an idea
  5. 8. not harmful; kind and generous
  6. 10. to quote something as an authority
  7. 12. a puzzling situation or person