1. preference the right or chance to choose
  2. anatomical reference an expression that relates to anatomy
  3. improvidence a lack of prudence, care, or foresight
  4. frame of reference a system that uses coordinates to establish position
  5. temperance the trait of avoiding excesses
  6. interference the act of hindering or obstructing or impeding
  7. impervious not admitting of passage or capable of being affected
  8. reverence a feeling of profound respect for someone or something
  9. contemporary occurring in the same period of time
  10. irreverence a mental attitude showing lack of due respect
  11. reference the act of consulting
  12. deference courteous regard for people's feelings
  13. date of reference (astronomy) an arbitrarily fixed date that is the point in time relative to which information (as coordinates of a celestial body) is recorded
  14. improvement the act of making something better
  15. temporariness the property of lasting only a short time
  16. imperviousness the quality of being impenetrable
  17. preferential manifesting partiality
  18. imperfectness the state or an instance of being imperfect
  19. imperforate anus a congenital defect of the anus
  20. improvident not supplying something useful for the future