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[kon-shee-en-shuh s, kon-see-] /ˌkɒn ʃiˈɛn ʃəs, ˌkɒn si-/
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.
careful and painstaking; particular; meticulous; scrupulous:
conscientious application to the work at hand.
Origin of conscientious
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
1. just, upright, honest, faithful, devoted, dedicated. 2. See painstaking. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for conscientiousness
  • In anorexics, striving for perfection and conscientiousness are common non-pathological traits.
  • The more conscientiousness companies have also used recycled materials.
  • How does the brain experience pleasure, the central organ that gives conscientiousness to the self.
  • Luckily this kind of conscientiousness is a lot more fun than, say, filling out your taxes on time.
  • Consideration and conscientiousness are both qualities of empathy which are both lacking.
  • conscientiousness also tends to rise with age: older workers have lower levels of absenteeism than younger colleagues.
  • The opposite fault of over-conscientiousness must also be noticed.
  • From our study, we're looking at it in terms of conscientiousness v post frequency.
  • But a similar experiment with tighter controls found support only for the traits of extroversion and conscientiousness.
  • The quality of the training varied within large limits with the capacity and conscientiousness of the master.
British Dictionary definitions for conscientiousness


involving or taking great care; painstaking; diligent
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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for conscientiousness



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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