The Open Dictionary

punctiliousness

noun

UK/pʌŋkˈtɪl.i.əs.nəs/
US/pʌŋkˈtɪl.i.əs.nəs/

Definitions of punctiliousness noun

  1. Uncountable

    the quality of being extremely careful and precise in behavior or attention to details

    • Her reputation was built on her punctiliousness and upright character.

    • The company's staff is known for their punctiliousness in all matters.

    • His punctiliousness in etiquette reflects his meticulous nature.