Definition of conscientious in English:

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Pronunciation: /ˌkɒnʃɪˈɛnʃəs/


1Wishing to do one’s work or duty well and thoroughly: a conscientious man, he took his duties very seriously
More example sentences
  • He was thoroughly conscientious, always helpful and very much liked.
  • Nadine was one of the most thorough and conscientious editors I've ever known.
  • Despite uncertain health, he was installed as dean of St Paul's cathedral, where he was conscientious in his duties and subsequently buried.
2Relating to a person’s conscience: the individual is denied even the opportunity to break the law on conscientious grounds
More example sentences
  • It is very refreshing to see that there may be an ability to refuse to pay a levy for a reason relating to conscientious or religious grounds.
  • He has had the courage to restate his conscientious beliefs in the face of misunderstanding and abuse, and the humility to shoulder the yoke of the 2000-year-old moral tradition that has been entrusted to him.
  • So if the Legislature wants to accommodate people's religious beliefs as well as their secular philosophical and conscientious beliefs, that's great.



Pronunciation: /kɒnʃɪˈɛnʃəsnəs/
Example sentences
  • Later, she struck me with her conscientiousness, perseverance and even doggedness.
  • I admire her conscientiousness as she carefully shops for fresh food and, then at home, washes all the fruits and vegetables she buys for at least 20 minutes prior to their cooking.
  • Indeed, the case was run upon the basis of good conscience to insist on our legal rights, when in all reality the facts reveal that in terms of conscientiousness the applicants themselves are not painted in a good picture.


Early 17th century: from French consciencieux, from medieval Latin conscientiosus, from Latin conscientia (see conscience).

Words that rhyme with conscientious

contentious, licentious, pretentious, sententious, tendentious

For editors and proofreaders

Line breaks: con|scien|tious

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