scrupular
/ˈskrʌpjʊləs/Definitions
1. adjective
having or showing a strong sense of right and wrong, and being careful to avoid doing anything wrong or unfair.
“She was known for being a scrupulous accountant, always ensuring her clients’ finances were accurate.”
2. noun
a scrupulous person, especially one who is excessively concerned with minor rules or details.
“He was a bit of a scrupulous person, always double-checking the fine print before making a decision.”