#difficultness__difficultnes  the quality of being difficult; "they agreed about the difficulty of the climb"
  exclusion:  #easiness
  supertype:  #quality  an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained"--Shakespeare
  subtype:  #effortfulness__effortfulnes  the quality of requiring deliberate effort
     subtype:  #arduousness__arduousnes__strenuousnes  extreme effortfulness
     subtype:  #laboriousness__laboriousnes__operosenes__toilsomenes  the quality of requiring extended effort
  subtype:  #grimness__asperity__hardship__rigor__rigour__severity__rigorousness  something hard to endure; "the asperity of northern winters"
  subtype:  #hardness.difficultness__hardnes  the quality of being difficult to do; "he assigned a series of problems of increasing hardness"
  subtype:  #formidability__toughness__toughnes  impressive difficulty
  subtype:  #burdensomeness__onerousness__onerousnes__oppressivenes  unwelcome burdensome difficulty
  subtype:  #subtlety__niceness  the quality of being difficult to detect or analyze; "you had to admire the subtlety of the distinctions he drew"
  subtype:  #troublesomeness__troublesomenes__worriment  a difficulty that causes anxiety
     subtype:  #cumbersomeness__awkwardness__awkwardnes__unwieldines  trouble in carrying or managing caused by bulk or shape: "the movers cursed the unwieldiness of the big piano"
     subtype:  #flea_bite  a very minor inconvenience
     subtype:  #fly_in_the_ointment  an inconvenience that detracts from the usefulness of something

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