Take some/a lot of doing Definition 1 of 2Pro Tip 1/3Effort and Time Indicates tasks that are especially challenging or lengthy. Learning the violin can take a lot of doing. Pro Tip 2/3Resource Intensive Used when something needs a great deal of materials or money. Funding a new library will take a lot of doing. Pro Tip 3/3Persistence Required Suggests ongoing commitment and determination are necessary. Becoming a chess master takes some doing.