#unfavorableness__unfavorablenes__unfavourablenes  the quality of not being encouraging or indicative of success
  exclusion:  favorableness
  supertype:  disadvantage  the quality of having an inferior or less favorable position
  subtype:  inauspiciousness__unpropitiousness  the quality of suggesting an unsuccessful result

No statement uses or specializes unfavorableness; click here to add one.