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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.
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 conscientiously
  • They guard it so conscientiously that they have even given it a code name.
  • Professionalism implies doing your job conscientiously.
  • Then they tried to do both tasks simultaneously and equally conscientiously.
  • The costumes are sparse, the weapons cardboard and the sound track conscientiously unsynchronized.
  • The movie is, if anything, too conscientiously encyclopedic.
  • But if you conscientiously use the freezer in two ways, you'll value it as never before.
  • In the beginning they all did their jobs quite conscientiously and politely.
  • If you conscientiously wear these devices, they work.
  • But he conscientiously sent his family to the seashore in the summer.
  • The great pianist conscientiously applied the prescription to himself, and everything he did was con brio.
British Dictionary definitions for conscientiously


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 conscientiously



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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