Strictly attentive to minute details of form in action or conduct.
Very careful about every detail of behavior, ceremony, etc.
A punctilious host.
Very exact; scrupulous.
The definition of punctilious describes someone that is careful with all the details of behavior.
An example of someone who is punctilious is the party planner at the wedding.
Origin of punctilious
From punctilio +"Ž -ous