1. sinuosity having curves
  2. sinusoid the curve of y=sin x
  3. sinister wicked, evil, or dishonorable
  4. sinusitis inflammation of one of the paranasal sinuses
  5. incite provoke or stir up
  6. sensitive responsive to physical stimuli
  7. sinuate curved or curving in and out
  8. density the amount per unit size
  9. sincerity the quality of being open and truthful
  10. in situ in the original or natural place or site
  11. sinusoidal having a succession of waves or curves
  12. on-site taking place or located at the site
  13. sincere open and genuine; not deceitful
  14. inside relating to or being on the side closer to the center or within a defined space
  15. sensitize make sensitive or aware
  16. in-situ being in the original position; not having been moved
  17. sinus an abnormal passage leading from a suppurating cavity to the body surface
  18. sensitise cause to sense; make sensitive
  19. animosity a feeling of ill will arousing active hostility
  20. sinuous curved or curving in and out