DictionarypunctiliousCareful about correct conduct
adjective

punctilious

punk-TIL-ee-us/pʌŋkˈtɪliəs/

Extremely attentive to details of rules or proper behavior.

The punctilious man measures the fork's position in the formal place setting.

An older man meticulously adjusts a fork by a tiny amount against a ruler while setting an already immaculate formal dining place setting, making excessive attention to etiquette and minute details visible.
Etymology

The probable Italian source centers on a “fine point.” Applied to behavior, attention to such points means exact observance of even small details of rules, manners, or custom.

In context

Storytime Haven13:55
I didn't want to make a lot of errors in spelling. These Italians are so very punctilious.
The Czar's Spy: The Mystery of a Silent Love 🕵️‍♂️💘 | William Le Queux Classic Spy Thriller

More examples

  • Our host is punctilious about making proper introductions.
  • Even during heated debates, he remains punctilious about addressing colleagues respectfully.
  • The committee is punctilious in observing its voting procedures.

Forms

punctilious · more punctilious · most punctilious

punctiliously adverb — With exact attention to rules or etiquette.

punctiliousness noun — Strict attention to rules or proper behavior.

Similar words

meticulous
Emphasizes careful attention to any details, not specifically proper conduct.
scrupulous
Often emphasizes moral honesty rather than exact observance of etiquette.