a. marked by precise accordance with details
Percy is punctilious about observing the rules of etiquette whenever Miss Manners invites him to stay.
Sentence in Classic:
The old prince, like all fathers indeed, was exceedingly punctilious on the score of the honor and reputation of his daughters.
Anna Karenina(V1) By Leo Tolstoy Context
Athos was a gentleman, punctilious in points of honor; and there were in the plan which our lover had devised for Milady, he was sure, certain things that would not obtain the assent of this Puritan.
THE THREE MUSKETEERS By Alexandre Dumas Context