Here is the list of terms you originally supplied: brawl casual constant excel exhaust hardy mediocre monotonous originate punctuate ravenous realistic soothe stampede veteran steer sombrero rodeo mustang

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Across
  1. 2. calm-comfort
  2. 5. roundup-competition
  3. 8. begin-emerge
  4. 11. steady-unceasing
  5. 14. average-ordinary
  6. 16. guide-direct
  7. 17. hungry-starving
  8. 18. tire-drain
  9. 19. shine-outperform
Down
  1. 1. hat-wide-brimmed
  2. 3. tough-resilient
  3. 4. experienced-seasoned
  4. 6. repetitive-dull
  5. 7. fight-fracas
  6. 9. wild horse-stallion
  7. 10. interrupt-emphasize
  8. 12. charge-rush
  9. 13. informal-relaxed
  10. 15. practical-credible