Word

conscientious

adjective C1

UK /ˌkɒn.ʃiˈɛn.ʃəs/

US /ˌkɑn.ʃiˈɛn.ʃəs/

Meanings

adjective

Careful to do work well and thoroughly, with attention to detail and responsibility.

adjective

Guided by a strong sense of duty and moral responsibility; wanting to do what is right.

Definition

Careful, responsible, and thorough in the way you do your work or duties.

If someone is conscientious, they take their responsibilities seriously and try to do things correctly. They pay attention to details, follow through on tasks, and aim for high standards. This word often describes a person’s work habits, reliability, and sense of duty.

Examples

I’m conscientious about checking every figure before I send the final report.
You’re conscientious, so I trust you to handle the client’s feedback tactfully and on time.
He is conscientious in meetings, taking precise notes and following up on every action point.
She remained conscientious under pressure, double-checking the details instead of rushing the decision.
They are conscientious about shared spaces, leaving the kitchen cleaner than they found it.

Common mistake

Learners sometimes confuse "conscientious" (careful and responsible) with "conscious" (awake or aware).