Words With a Silent Letter

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Across
  1. 3. To be sad or serious.
  2. 5. Looping string or rope and fastening it.
  3. 7. The first digit on each of your hands.
  4. 8. A warrior who fought on horseback.
  5. 9. Something that is owed to someone else.
Down
  1. 1. An upright pillar
  2. 2. A baby sheep.
  3. 4. Follows summer and is before winter.
  4. 5. Where a finger joins a hand.
  5. 6. Unsure.