WordNet: difficultness, difficulty

the quality of being difficult; "they agreed about the difficulty of the climb"

• attribute difficult, hard

• hypernym quality

• hyponym effortfulness

• hyponym asperity, grimness, hardship, rigor, rigorousness, rigour, rigourousness, severeness, severity

• hyponym hardness, ruggedness

• hyponym formidability, toughness

• hyponym burdensomeness, heaviness, onerousness, oppressiveness

• hyponym niceness, subtlety

• hyponym inconvenience, troublesomeness, worriment

difficultness

• (englanti) difficult (derivationally related)
• (suomi) vaivalloisuus (synonyymi)

difficulty

• (englanti) ease (antonym)
• (suomi) vaikeus (synonyymi)