Crossword

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Across
  1. 3. Difficult to estimate
  2. 7. Unreasonably high in cost/massive
  3. 9. A reason or explanation for something.
  4. 10. Extremely tired or exhausted
  5. 11. A very large amount
  6. 13. To begin or start.
  7. 14. To complete something on time
  8. 15. To refresh skills or knowledge
  9. 16. To appear on the horizon
  10. 17. Extremely important or necessary.
Down
  1. 1. To keep knowledge
  2. 2. A general idea or understanding
  3. 4. To gather strength or motivation
  4. 5. Logical and consistent
  5. 6. To make use of something
  6. 8. To complete something effortlessly
  7. 12. To bring (a memory, feeling, image, etc.) into the mind
  8. 18. Priceless