use of physical or mental energy; hard work; "he got an A for effort"; "they managed only with great exertion"
14
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"
3
sorrow
an emotion of great sadness associated with loss or bereavement; "he tried to express his sorrow at her loss"