What's that word mean anyway?

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Across
  1. 1. unproductive, sterile, arid
  2. 5. to rush violently or fling forcefully
  3. 8. trifling, insignificant, or minor
  4. 10. monotonous, prosaic, boring
  5. 13. to imply
  6. 15. never-ending
  7. 16. preview or anticipation
  8. 18. wicked or malicious
  9. 19. regime
  10. 20. synopsis or brief summary of one's life
Down
  1. 2. dismount or land
  2. 3. grumpy, surly, peevish, morose
  3. 4. to begin to grow or sprout
  4. 6. cease-fire or peace
  5. 7. near or adjoining
  6. 9. to repay
  7. 11. to question or query
  8. 12. to repair
  9. 14. upset, displace, disorder
  10. 17. dribble, drizzle, drip