1. extensiveness large or extensive in breadth or importance or comprehensiveness
  2. expensiveness the quality of being high-priced
  3. perseverance the act of continuing or repeating
  4. expansiveness a quality characterized by magnificence of scale or the tendency to expand
  5. extensive large in spatial extent or range or scope or quantity
  6. extension agent an advisor employed by the government to assist people in rural areas with methods of farming and home economics
  7. excessiveness immoderation as a consequence of going beyond sufficient or permitted limits
  8. intensiveness high level or degree; the property of being intense
  9. expressiveness the quality of being expressive
  10. exclusiveness tendency to associate with only a select group
  11. extension course a course offered as part of an extension service
  12. inexpensiveness the quality of being affordable
  13. extension service an educational opportunity provided by colleges and universities to people who are not enrolled as regular students
  14. extension phone an additional telephone set that is connected to the same telephone line
  15. extensively in a widespread way
  16. extension act of expanding in scope
  17. extemporaneous with little or no preparation or forethought
  18. extraneous not belonging to that in which it is contained
  19. intensive care unit a hospital unit staffed and equipped to provide intensive care
  20. extensor muscle a skeletal muscle whose contraction extends or stretches a body part