punc·til·io /ˌpʌŋkˈtɪliˌo/
細節,拘泥形式,拘束
Punc·til·io n.; pl. Punctilios A nice point of exactness in conduct, ceremony, or proceeding; particularity or exactness in forms; as, the punctilios of a public ceremony.
They will not part with the least punctilio in their opinions and practices. --Fuller.
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punctilio
n 1: a fine point of etiquette or petty formality
2: strict observance of formalities