From Longman Dictionary of Contemporary Englishcan-doˌcan-ˈdo adjective [only before noun] informalWILLING willing to try anything and expect that it will work He has a wonderful can-do attitude towards work.From Longman Business Dictionarycan-doˈcan-do adjective [only before a noun] having a strong belief that you can succeed in getting things done, and willing to try hard and use any method to do thisHe has a can-do attitude and knows how to work with colleagues to get things done.