scrupulosity

His scrupulosity made him double-check every detail to avoid any mistakes.

彼の慎重さは、間違いを避けるためにすべての細部を何度も確認させた。

She struggled with scrupulosity, constantly fearing she had sinned even in minor ways.

彼女は些細なことでさえ罪を犯したと恐れて、強迫的な罪悪感に苦しんだ。