taking or characterized by taking pains or trouble; expending or showing diligent care and effort; careful: a painstaking craftsman; painstaking research.
careful and diligent effort.
pain + -s3 + taking 1550–60
1.See corresponding entry in Unabridged thorough, scrupulous. Painstaking, careful, meticulous, conscientious all describe persons or behavior demonstrating attention to detail and effective task performance. painstaking stresses diligent and assiduous attention to detail in achieving a desired objective: a painstaking technician; the painstaking editing of a manuscript.Careful, the most general in sense of these words, implies serious intent to perform well and accurately whatever task one has in hand: a careful housepainter; a careful study of the social structure of gangs.Meticulous suggests extreme attention to details, especially the most minute, coupled with an almost obsessive desire to avoid error:a meticulous silversmith, every detail finished to perfection; fussily meticulous about matching shoes and clothing.Conscientious stresses scrupulous effort to obey one's sense of moral obligation to perform tasks well: a conscientious public defender; a conscientious description of the robbery.