Noun
1. 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"2. 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"3. 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"4. the quality of being difficult;
"they agreed about the difficulty of the climb"