1. insidious working or spreading in a hidden and usually injurious way
  2. installing the act of installing something (as equipment)
  3. install set up for use
  4. nostalgia a longing for something past
  5. anastalsis muscular action of the alimentary tract in a direction opposite to peristalsis
  6. instill impart gradually
  7. instance an item of information that is typical of a class or group
  8. installment a payment of part of a debt
  9. instilling teaching or impressing upon the mind by frequent instruction or repetition
  10. anastylosis the archeological reassembly of ruined monuments from fallen or decayed fragments (incorporating new materials when necessary)
  11. installation the act of setting something up for use
  12. nostalgic unhappy about being away and longing for familiar things
  13. instalment a part of a broadcast serial
  14. unstableness the quality or attribute of being unstable and irresolute
  15. indweller a person who inhabits a particular place
  16. in stages a little bit at a time
  17. instal set up for use
  18. instar an insect or other arthropod between molts
  19. unsightliness ugliness that is unpleasant to look at
  20. instillator medical apparatus that puts a liquid into a cavity drop by drop