punctilious

/pʌŋkˈtɪliəs/
adjective
  1. Very careful about behaving correctly and following rules, details, or social customs exactly.
    • The butler was punctilious about setting the table with every fork and spoon in its proper place.
    • Her punctilious attention to grammar made her an excellent editor.
    • Even in casual conversation, he was punctilious about using the correct titles for everyone.
What does "punctilious" mean? | whatsthatwordmean | whatsthatwordmean