Open English Wordnet
Nouns
(n)trouble, difficultyan 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”
Verbs
(v)trouble, put out, inconvenience, disoblige, discommode, incommode, botherto cause inconvenience or discomfort to“Sorry to trouble you, but …”
(v)trouble oneself, trouble, bother, inconvenience oneselftake the trouble to do something; concern oneself“He did not trouble to call his mother on her birthday”, “Don't bother, please”