1. 正直的;有道德原则的;有良心的
Someone who is scrupulous takes great care to do what is fair, honest, or morally right.

1. characterized by extreme care and great effort

e.g. conscientious application to the work at hand
painstaking research
scrupulous attention to details

Synonym: conscientiouspainstaking

2. having scruples
arising from a sense of right and wrong
principled

e.g. less scrupulous producers sent bundles that were deceptive in appearance