1. necessary absolutely essential
  2. necessarily in such a manner as could not be otherwise
  3. necessitous poor enough to need help from others
  4. censorious harshly critical or expressing censure
  5. unnecessarily without any necessity
  6. necessitarian someone who does not believe the doctrine of free will
  7. scissors an edge tool having two crossed pivoting blades
  8. necessity the condition of being essential or indispensable
  9. Insessores a bird with feet adapted for perching
  10. unnecessary not needed
  11. Senecio aureus weedy herb of the eastern United States to Texas having golden-yellow flowers; sometimes becomes invasive; sometimes placed in genus Senecio
  12. genus Cereus genus of much-branched treelike or shrubby cacti with pronounced ribs and rounded needlelike spines and nocturnal flowers usually white
  13. genus Isurus mako sharks
  14. Xenosaurus type and sole genus of Xenosauridae: slender-bodied Mexican lizards having the upper surface covered with tiny granules and tubercles
  15. necessitate require as useful, just, or proper
  16. ancestress a woman ancestor
  17. genus Sciurus type genus of the Sciuridae
  18. genus Seiurus ovenbirds and water thrushes
  19. incessant uninterrupted in time and indefinitely long continuing
  20. genus Serinus Old World finches; e.g. canaries and serins