The meaning of CONSCIENTIOUS is exercising attentive care to avoid errors or omissions : concerned with doing something correctly : meticulous, careful. How to use conscientious in a sentence.

CONSCIENTIOUS definition: governed by conscience; controlled by or done according to one's inner sense of what is right; principled. See examples of conscientious used in a sentence.

For conscientious members of a community, they provide at least additional reasons for conformity to the law.

Definition of conscientious adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

1 day ago · Read to know the meaning of 'Conscientious 'ts origin, usage with examples, and synonyms

1. meticulous; careful; painstaking. 2. governed by or done according to conscience; scrupulous: a conscientious judge.

Jan 20, 2026 · Adjective conscientious (comparative more conscientious, superlative most conscientious) Thorough, careful, or vigilant in one’s task performance; painstaking.

WordReference Random House Unabridged Dictionary of American English © 2026 con•sci•en•tious (kon′shē en′ shəs, kon′sē-), adj. controlled by or done according to conscience; scrupulous: a …

What does the adjective conscientious mean? There are four meanings listed in OED's entry for the adjective conscientious, one of which is labelled obsolete, and one of which is considered derogatory.

Thorough, careful, or vigilant; implies a desire to do a task well. He was a thoughtful and conscientious worker.