1. improvement the act of making something better
  2. improvident not supplying something useful for the future
  3. important significant in effect or meaning
  4. imperative requiring attention or action
  5. imprudent not sensible, responsible, or wise
  6. improving getting higher or more vigorous
  7. impertinent improperly forward or bold
  8. impressment the act of forcing someone into government service
  9. imprint mark or stamp with or as if with pressure
  10. improved become or made better in quality
  11. empowerment the act of giving authority or legality to
  12. improvidently in an improvident manner
  13. mitre joint joint that forms a corner
  14. improvised done or made using whatever is available
  15. improvidence a lack of prudence, care, or foresight
  16. impression a vague idea in which some confidence is placed
  17. fibrous joint an immovable joint
  18. improvise manage in a makeshift way; do with whatever is at hand
  19. improvisation a performance given without planning or preparation
  20. impervious not admitting of passage or capable of being affected