1. nostalgia a longing for something past
  2. instance an item of information that is typical of a class or group
  3. install set up for use
  4. instill impart gradually
  5. instal set up for use
  6. instancy the quickness of action or occurrence
  7. installation the act of setting something up for use
  8. instil enter drop by drop
  9. installing the act of installing something (as equipment)
  10. anastalsis muscular action of the alimentary tract in a direction opposite to peristalsis
  11. instillation the introduction of a liquid drop by drop
  12. instigate provoke or stir up
  13. unstylish not in accord with or not following current fashion
  14. anastylosis the archeological reassembly of ruined monuments from fallen or decayed fragments (incorporating new materials when necessary)
  15. in stages a little bit at a time
  16. in style in the current fashion or style
  17. nostalgic unhappy about being away and longing for familiar things
  18. instilling teaching or impressing upon the mind by frequent instruction or repetition
  19. instillator medical apparatus that puts a liquid into a cavity drop by drop
  20. incidence the relative frequency of occurrence of something