Silent letters

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Across
  1. 1. Made an answer without being sure
  2. 3. Went upward using hands or feet
  3. 6. To settle comfortably into something
  4. 7. To go upward using hands or feet
  5. 8. To pay attention to sound
  6. 9. Help or advice
  7. 12. Feeling uncertain
  8. 13. To bite or chew repeatedly
  9. 15. To feel uncertain about something
Down
  1. 1. Trying to answer without knowing for sure
  2. 2. To shine or sparkle softly
  3. 4. To push roughly in a crowd
  4. 5. A person invited somewhere
  5. 7. A very small piece of bread or food
  6. 10. The season between summer and winter
  7. 11. Chewing repeatedly
  8. 14. A high sound made by blowing air