1. trepidation a feeling of alarm or dread
  2. connotation an idea that is implied or suggested
  3. reputation the general estimation that the public has for a person
  4. repetition the act of doing or performing again
  5. dissertation a treatise advancing a point of view resulting from research
  6. precipitation the falling to earth of any form of water
  7. disorientation confusion about where you are and how to proceed
  8. disputation a formal debate
  9. crepitation the sharp sound of snapping noises
  10. sustentation the act of sustaining life by food or providing a means of subsistence
  11. sternutation a symptom consisting of the involuntary expulsion of air from the nose
  12. decrepitation the crackling or breaking up of certain crystals when they are heated
  13. repudiation rejecting or disowning or disclaiming as invalid
  14. disceptation a contentious speech act
  15. septation the division or partitioning of a cavity into parts by a septum
  16. susurration an indistinct sound, as of whispering or rustling
  17. usurpation wrongfully seizing and holding by force
  18. perpetuation the act of prolonging or causing to exist indefinitely
  19. superfetation fertilization of a second ovum after a pregnancy has begun
  20. social station position in a social hierarchy