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adjective

conscientious

/kɒnʃiˈɛnʃəs/  ·  say it: kun·shee·EN·shus

careful and diligent about duties

In Personality & Character

In more detail

1. (adjective) careful to do what you believe is right; wanting to do a job well and thoroughly

2. (adjective) showing that you care about doing something properly and completely

Examples

How to use conscientious

Conscientious describes someone who is careful and thorough because they have strong personal principles or professional standards, not merely out of obligation. It implies both moral integrity and dedication to quality work. It is more formal and carries a slightly more positive moral dimension than diligent, which focuses primarily on hard work.

Register: formal

Common phrases

Synonyms

diligent · meticulous · scrupulous · thorough · principled

Opposites

careless · negligent · irresponsible

Word family

conscientiousness (noun) · conscientiously (adverb)

A common mistake

Learners sometimes confuse conscientious (careful and principled) with conscious (aware), though the words are spelled similarly and both relate to awareness in different ways.

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