[kon-shee-en-shuhs, kon-see-]


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 formscon·sci·en·tious·ly, adverbcon·sci·en·tious·ness, nounhy·per·con·sci·en·tious, adjectivehy·per·con·sci·en·tious·ly, adverbhy·per·con·sci·en·tious·ness, nouno·ver·con·sci·en·tious, adjectiveo·ver·con·sci·en·tious·ly, adverbun·con·sci·en·tious, adjectiveun·con·sci·en·tious·ly, adverbun·con·sci·en·tious·ness, noun

Synonyms for conscientious Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for over-conscientious

Historical Examples of over-conscientious

  • The over-conscientious parent will disgust one child and make a fanatic of another.

  • The over-conscientious individual may object that it is selfish to consider his own comfort when he has work to do for others.

    Why Worry?

    George Lincoln Walton, M.D.

  • Hers was one of those involved and over-conscientious characters, keenly sensitive to the thought of duty and to others, pain.

    The Crux

    Charlotte Perkins Gilman

  • There is a word of warning which should here be spoken to the over-conscientious student.

  • But the obstinacy of an over-conscientious person who has a duty to perform is appalling.

    A Lady of Rome

    F. Marion Crawford

British Dictionary definitions for over-conscientious



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 over-conscientious



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