(a.) Attentive to small detail; precise; exact in the smallest particulars\; attentive to punctilio; very nice or exact in the forms of behavior, or etiquette.

accurate active attentive careful censorious choicy choosy close compliant conforming conscientious conscionable constant conventional correct critical delicate demanding detailed devoted devout discriminating discriminative duteous dutiful exact exacting exigent exquisite faithful fastidious fine finical finicking finicky formal fussy heedful loyal methodical meticulous mindful minute narrow nice observant orderly overconscientious overscrupulous painstaking particular perfectionistic picky practicing precious precise precisian precisianistic precisionist precisionistic priggish prudish punctual puristic puritanic refined regardful religious rigid rigorous scrupulous scrutinizing selective sensitive strict subtle tender-conscienced TRUE