IPA: /ˌoʊvərˈskruːpjələs/
KK: /oʊvərˈskrupjələs/
Being very careful and precise about doing things right, often to an extreme degree.
Her overscrupulous nature made her double-check every detail of the report before submission.
Overscrupulous → It is formed from "over-" (meaning excessively) and "scrupulous" (from Latin "scrupulosus", meaning full of scruples or moral doubts). The word describes someone who is excessively concerned with details or moral correctness.
Think of being 'excessively' ('over-') careful about moral issues ('scrupulous') — that's why overscrupulous means being overly meticulous about right and wrong.