"scrupulous" in the adjective sense
1. scrupulous
having scruples arising from a sense of right and wrong principled
"less scrupulous producers sent bundles that were deceptive in appearance"
2. conscientious, painstaking, scrupulous
characterized by extreme care and great effort
"conscientious application to the work at hand"
"painstaking research"
"scrupulous attention to details"
Source: WordNet® (An amazing lexical database of English)
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