1. daily variation fluctuations that occur between one day and the next
  2. alliteration use of the same consonant at the beginning of each word
  3. infuriation a feeling of intense anger
  4. diurnal variation fluctuations that occur during each day
  5. inversion the act of turning inside out
  6. information knowledge acquired through study or experience
  7. denigration an abusive attack on a person's character or good name
  8. congratulations an expression of approval and commendation
  9. variation the process of being or becoming different
  10. conversion the act of changing from one use or function to another
  11. invariance the quality of being resistant to variation
  12. conversation the use of speech for informal exchange of views or ideas
  13. inebriation a temporary state resulting from excessive consumption of alcohol
  14. conversationist someone skilled at conversation
  15. divarication branching at a wide angle
  16. inauguration the ceremonial induction into a position
  17. vinegarishness a sourness resembling that of vinegar
  18. trading operations financial transactions at a brokerage
  19. conversational characteristic of informal spoken language or conversation
  20. confederation the state of being allied