taking care to do things carefully and correctly; a conscientious student/teacher/worker; He was thorough and conscientious, rather than brilliant.

[uncountable] ​the quality of doing things carefully and correctly. They were impressed by the professionalism and conscientiousness of the staff.

There are four meanings listed in OED's entry for the adjective conscientious, one of which is labelled obsolete, and one of which is considered derogatory.

​in a careful and correct way. She performed all her duties conscientiously. Want to learn more? Find out which words work together and produce more ...

a person who refuses to serve in the armed forces for moral reasons. compare draft dodger, pacifist.

feeling a moral responsibility to do your work carefully and to be fair to others. She was a conscientious worker, and I'll miss her.

a person who refuses to serve in the armed forces for moral reasons. compare draft dodger, pacifist.

conscious · ​. [not before noun] aware of something; noticing something · ​. able to use your senses and mental powers to understand what is happening · ​. (of ...

2 meanings: 1. involving or taking great care; painstaking; diligent 2. governed by or done according to conscience.... Click for more definitions.