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conscientious

[kon-shee-en-shuh s, kon-see-] /ˌkɒn ʃiˈɛn ʃəs, ˌkɒn si-/
adjective
1.
governed by conscience; controlled by or done according to one's inner sense of what is right; principled:
She's a conscientious judge, who does not let personal prejudices influence her decisions.
2.
careful and painstaking; particular; meticulous; scrupulous:
conscientious application to the work at hand.
Origin
1605-1615
1605-15; < Medieval Latin conscientiōsus, equivalent to Latin conscienti(a) conscience + -ōsus -ous
Related forms
conscientiously, adverb
conscientiousness, noun
hyperconscientious, adjective
hyperconscientiously, adverb
hyperconscientiousness, noun
overconscientious, adjective
overconscientiously, adverb
unconscientious, adjective
unconscientiously, adverb
unconscientiousness, noun
Synonyms
1. just, upright, honest, faithful, devoted, dedicated. 2. See painstaking.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for un conscientious

conscientious

/ˌkɒnʃɪˈɛnʃəs/
adjective
1.
involving or taking great care; painstaking; diligent
2.
governed by or done according to conscience
Derived Forms
conscientiously, adverb
conscientiousness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for un conscientious

conscientious

adj.

1610s, from Middle French conscientieux (16c.; Modern French consciencieux), from Medieval Latin conscientiosus, from conscientia (see conscience). Related: Conscientiously; conscientiousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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