- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unconscientiously
I suppose he may have used some irritating expressions, unconsciously, but not unconscientiously, I am sure.Over the Teacups
Oliver Wendell Holmes, Sr.
- involving or taking great care; painstaking; diligent
- governed by or done according to conscience
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 unconscientiously
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