1. prizewinning holding first place in a contest
  2. designing the act of working out the form of something
  3. threatening suggesting or expressive of evil, harm, or danger
  4. dimensioning indicating or determining size and position in space
  5. trades union an employee organization that bargains with an employer
  6. disillusioning freeing from illusion or false belief
  7. dead reckoning navigation without the aid of celestial observations
  8. part-singing singing with three or more voice parts
  9. reasoning thinking that is organized and logical
  10. award-winning having received awards
  11. darkening changing to a darker color
  12. discerning having or revealing keen insight and good judgment
  13. gardening the cultivation of plants
  14. retraining training for a new occupation
  15. hardening the act of making something harder
  16. draining having a debilitating effect
  17. iris scanning biometric identification by scanning the iris of the eye
  18. training activity leading to skilled behavior
  19. disowning refusal to acknowledge as one's own
  20. reigning exercising power or authority