conscientious

From Middle French conscientieux

• (UK) IPA^(key): /ˌkɒnʃiˈɛnʃəs/
• (US) IPA^(key): /ˌkɑnʃiˈɛnʃəs/

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conscientious (comparative more conscientious, superlative most conscientious)

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 women.

• capricious
• impulsive

• conscientiously
• conscientiousness
• conscientious objector

• conscience

• conscientious in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• conscientious in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
• “vigilance” in Roget's Thesaurus, T. Y. Crowell Co., 1911.