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