From Longman Dictionary of Contemporary Englishnot trouble to do somethingnot trouble to do somethingNOT DO somethingto not do something because it needs too much effort They never troubled to ask me what I would like. Luke didn’t trouble to hide his disgust.RegisterIn everyday English, people usually say not bother to do something rather than not trouble to do something:They didn’t bother to ask me what I thought. → trouble
Examples from the Corpus
not trouble to do something• Paul need not trouble to come down, everything had been arranged.• Do not trouble to don your hat and gloves, Holmes.• She had not troubled to dress, despite, or perhaps because of, the fact that she had male visitors.• The Attorney-General I have not troubled to inquire whether any firm has contributed to the Conservative party.• I did not trouble to raise the matter with Keeble. 