a. [ Cf. It. puntiglioso, Sp. puntilloso. ] Attentive to punctilio; very nice or exact in the forms of behavior, etiquette, or mutual intercourse; precise; exact in the smallest particulars. “A punctilious observance of divine laws.” Rogers. “Very punctilious copies of any letters.” The Nation. [ 1913 Webster ]
Punctilious in the simple and intelligible instances of common life. I. Taylor. [ 1913 Webster ]
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