conscientious
adj.adj. working hard and being very careful to do things the right way. A person like this feels a strong sense of duty to do their job well.
adj. governed by or conforming to the dictates of conscience; meticulous and careful in the execution of duties. Often used to describe professional or academic conduct.
She is a conscientious student who never misses a deadline.
The manager praised the new employee for being conscientious and paying close attention to every detail of the report.
A conscientious approach to research requires not only diligence in data collection but also a rigorous commitment to ethical standards and transparency.
From Middle French conscientieux, from Medieval Latin cōnscientiōsus. Its English equivalent could possibly be analyzed as conscient + -ous. See more at conscience.
Typically used to describe people or their work habits; often follows linking verbs like 'be' or 'become'.
He is very conscious about his workHe is very conscientious about his workLearners often confuse 'conscious' (awake/aware) with 'conscientious' (hardworking/careful).