adjective

conscientious

conscientious, diligent, scrupulous

She is a very conscientious worker.

She is a very conscientious worker.

He made a conscientious effort to improve.

He made a conscientious effort to improve.

((a ~ worker/student)) a conscientious worker/student She is a very conscientious worker.

Synonyms: diligent, meticulous, scrupulous; Antonyms: careless, negligent

From 'conscience' + the adjective suffix '-ous'. It means 'full of conscience'.

A *conscientious* person is someone who listens to their *conscience* and does their work carefully.

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