Added 9 October 2026
conscientious
/ˌkɒn.ʃiˈɛn.ʃəs/ adjective
In Latin: pius Wiktionary
adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about conscientious at Wordnik → Where our words come from →
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Characterized by extreme care and great effort.
conscientious application to the work at hand
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Guided by or in accordance with conscience or sense of right and wrong.
a conscientious decision to speak out about injustice
Origin
From Middle French conscientieux, from Medieval Latin cōnscientiōsus. Its English equivalent could possibly be analyzed as conscient + -ous. See more at conscience.
From Wiktionary, via Kaikki.org (CC BY-SA)