conscientious

Etymology

From Middle French conscientieux, from Medieval Latin cōnscientiōsus. Its English equivalent could possibly be analysed as conscient + -ous; More at conscience.

adj

  1. Thorough, careful, or vigilant in one’s task performance.
    He was a thoughtful and conscientious worker.
  2. Influenced by conscience; governed by a strict regard to the dictates of conscience, or by the known or supposed rules of right and wrong (said of a person).
    The advice of wise and conscientious people.

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