[ kon-shee-en-shuhs, 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.

Nearby words

  1. conscience,
  2. conscience clause,
  3. conscience money,
  4. conscience-stricken,
  5. conscient,
  6. conscientious objection,
  7. conscientious objector,
  8. conscionable,
  9. conscious,
  10. conscious uncoupling

Origin of conscientious

1605–15; < Medieval Latin conscientiōsus, equivalent to Latin conscienti(a) conscience + -ōsus -ous

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for conscientiously

British Dictionary definitions for conscientiously


/ (ˌkɒnʃɪˈɛnʃəs) /


involving or taking great care; painstaking; diligent
governed by or done according to conscience
Derived Formsconscientiously, adverbconscientiousness, 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

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