definition of
difficulty

[1] #1 difficulty n. [trouble] an effort that is inconvenient; "I went to a lot of trouble"; "he won without any trouble"; "had difficulty walking"; "finished the test only with great difficulty". wn

[2] #2 difficulty n. a factor causing trouble in achieving a positive result or tending to produce a negative result; "serious difficulties were encountered in obtaining a pure reagent". wn

[3] #3 difficulty n. a condition or state of affairs almost beyond one's ability to deal with and requiring great effort to bear or overcome; "grappling with financial difficulties". wn

[4] #4 difficulty n. [difficultness] the quality of being difficult; "they agreed about the difficulty of the climb". wn