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painstaking

painstaking - adjective

  1. Showing or marked by attentiveness to all aspects or details: careful, fastidious, meticulous, punctilious, scrupulous. See careful.

painstaking - noun

  1. Attentiveness to detail: care, carefulness, fastidiousness, meticulousness, pain(used in plural), punctiliousness, scrupulousness, thoroughness. See careful.