Crossword for making things simple

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Across
  1. 4. Spread unevenly
  2. 7. The most important
  3. 8. Moving gradually
  4. 9. Made slightly wet
  5. 10. Long and tiring
Down
  1. 1. Keeping good health by paying attention to cleanliness
  2. 2. Not understood carefully
  3. 3. Obtained with some difficulty
  4. 5. Speed
  5. 6. Skilled or practiced at a profession