- 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
SynonymsSee more synonyms for on Thesaurus.com
Related Wordsselfish, petty, underhanded, deceitful, ruthless, illegal, shady, dishonest, crooked, corrupt, venal, unethical, crafty, shameless, arrant, base, degraded, degrading, disgraceful, dishonorable
Examples from the Web for unconscientious
Often, unconscientious pleasure-seekers roam the roads in their auto.Sex
That woman ought not to be at large—so rich and good-looking and unconscientious!A Cathedral Courtship
Kate Douglas Wiggin
Yet it is one of the most unconscientious diaries ever written.Sophy of Kravonia
I trust that you have given me credit, Mr. Gammon, for offering no vexatious or unconscientious obstacles.Ten Thousand a-Year (Vol. 2)
Nay, but God forbid that any unconscientious advantage should be taken on my behalf!Ten Thousand a-Year. Volume 1.
- involving or taking great care; painstaking; diligent
- governed by or done according to conscience
Word Origin and History for unconscientious
1610s, from Middle French conscientieux (16c.; Modern French consciencieux), from Medieval Latin conscientiosus, from conscientia (see conscience). Related: Conscientiously; conscientiousness.