| Noun | 1. | painstakingness - the trait of being painstaking and careful carefulness - the quality of being careful and painstaking; "I admired the carefulness of his work" thoroughness - conscientiousness in performing all aspects of a task diligence - conscientiousness in paying proper attention to a task; giving the degree of care required in a given situation strictness, stringency - conscientious attention to rules and details |