1. imperative requiring attention or action
  2. impressively in an impressive manner
  3. impressive making a strong or vivid mental image
  4. impressive aphasia aphasia characterized by fluent but meaningless speech and severe impairment of the ability understand spoken or written words
  5. impresario a sponsor who books and stages public entertainments
  6. impressiveness splendid or imposing in size or appearance
  7. perseverance the act of persisting
  8. impulsive without forethought
  9. oppressive weighing heavily on the senses or spirit
  10. unimpressively in an unimpressive manner
  11. persevere be persistent, refuse to stop
  12. impression a vague idea in which some confidence is placed
  13. improver someone devoted to the promotion of human welfare and to social reforms
  14. impassive having or revealing little emotion or sensibility
  15. impassively in an impassive manner
  16. oppressively in a heavy and oppressive way
  17. impervious not admitting of passage or capable of being affected
  18. impressed deeply or markedly affected or influenced
  19. impulsively in a hasty way; without caution or planning
  20. imperatively in an imperative and commanding manner