1. meticulous, punctilious, precise (vs. imprecise)

usage: marked by precise accordance with details; "meticulous research"; "punctilious in his attention to rules of etiquette"

2. meticulous, fastidious (vs. unfastidious)

usage: marked by extreme care in treatment of details; "a meticulous craftsman"; "almost worryingly meticulous in his business formalities"

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See also: meticulous (Dictionary)