difficultness | sense examples, Usage and Definition from wordnet dictionary online

Noun difficultness has 1 sense

difficulty, difficultness - the quality of being difficult; "they agreed about the difficulty of the climb"
--₁ is a kind of quality
--₁ has particulars:

effortfulness; asperity, grimness, hardship, rigor, rigour, severity, rigorousness; hardness; formidability, toughness; burdensomeness, onerousness, oppressiveness; subtlety, niceness; troublesomeness, inconvenience, worriment