con·​sci·​en·​tious | \ ˌkän(t)-shē-ˈen(t)-shəs How to pronounce conscientious (audio) \

Definition of conscientious

1 : meticulous, careful a conscientious listener
2 : governed by or conforming to the dictates of conscience : scrupulous a conscientious public servant

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Other Words from conscientious

conscientiously adverb

Choose the Right Synonym for conscientious

upright, honest, just, conscientious, scrupulous, honorable mean having or showing a strict regard for what is morally right. upright implies a strict adherence to moral principles. a stern and upright minister honest stresses adherence to such virtues as truthfulness, candor, or fairness. known for being honest in business dealings just stresses conscious choice and regular practice of what is right or equitable. workers given just compensation conscientious and scrupulous imply an active moral sense governing all one's actions and painstaking efforts to follow one's conscience. conscientious in the completion of her assignments scrupulous in carrying out the terms of the will honorable suggests a firm holding to codes of right behavior and the guidance of a high sense of honor and duty. a difficult but honorable decision

Did You Know?

According to American writer and editor H.L. Mencken, "Conscience is the inner voice which warns us someone may be looking." A person who is conscientious makes sure that if others are watching, they like what they see. "Conscience" and "conscientious" both come from the Latin verb conscire, a word that means "to be conscious" or "to be conscious of guilt" and that traces back to a still older Latin word, scire, meaning "to know."

Examples of conscientious in a Sentence

He was a good friend to his comrades, a conscientious leader mindful of his men's needs; an upright family man with strong, bright, proud children … — Tom Clancy, Without Remorse, 1994 Because Puckett was a conscientious lieutenant … his men did not have to stint on their fire. He had made sure that every man was carrying a basic load of ammunition and then some to spare … — Neil Sheehan, A Bright Shining Lie, 1988 He was shifty about money matters, not conscientious about returning advances, fulfilling contracts, reading manuscripts. — Monroe K. Spears, American Ambitions, 1987 She has always been a very conscientious worker. He was conscientious about following the doctor's orders.
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Recent Examples on the Web Beyond its conscientious footprint, the brand's products are downright soft, durable, and attractive enough to transform any bedroom. Maya Gandara, Travel + Leisure, "I Feel Like I’m Sleeping at a Luxury Hotel With This Ultra-soft Duvet Set," 3 Apr. 2021 Giesler suggests these conditions are weakening even the most conscientious consumers’ resolve to consistently make sustainable and ethical buying choices. Tracey Lindeman, Fortune, "A year of exhaustion has weakened consumers’ resolve to make ethical buying choices," 29 Mar. 2021 An intrepid and conscientious reporter, Sciolino goes to look at it, talks to Antoine Hoareau, the enthusiastic leader of the Friends of the Sources of the Seine, and drinks the water bubbling from springs in a swampy field. Diane Johnson, The New York Review of Books, "We’ll Always Have Paris," 23 Mar. 2021 As taking animals out of the food and product supply becomes a major focus for a growing number of conscientious consumers, those terms only skim the surface. Daphne Ewing-chow, Forbes, "Vegan Lingo For A Rapidly Growing Plant-Based World," 1 Mar. 2021 Italians are conscientious about social distancing and mask wearing. Stanley Stewart, Condé Nast Traveler, "The Joy of Seeing Rome Anew," 22 Mar. 2021 Those who are conscientious will likely also be pulling back. Dallas News, "Letters to the Editor - Opening up Texas, ‘Eyes of Texas,’ For the People Act, Shingle Mountain, vaccine process," 4 Mar. 2021 Our books are conscientious of the amount of panels per spread, the pacing of the narrative, and even the positioning of the speech balloons. Rachel Kramer Bussel, Forbes, "Little Simon Launches Children’s Book Graphic Novel Series," 28 Feb. 2021 The conscientious objectors among the underground clergy felt compelled to end their active ministries and return to their families, as Bishop Vincent Guo of Mindong did this past year. Nina Shea, National Review, "China Betrays Its Deal with the Vatican," 19 Feb. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'conscientious.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of conscientious

1603, in the meaning defined at sense 2

History and Etymology for conscientious

see conscience

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Time Traveler for conscientious

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The first known use of conscientious was in 1603

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Last Updated

7 Apr 2021

Cite this Entry

“Conscientious.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2021.

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More Definitions for conscientious



English Language Learners Definition of conscientious

: very careful about doing what you are supposed to do : concerned with doing something correctly


con·​sci·​en·​tious | \ ˌkän-shē-ˈen-shəs How to pronounce conscientious (audio) \

Kids Definition of conscientious

1 : guided by or agreeing with a sense of doing what is right No conscientious person would stand for such unfair actions.
2 : using or done with care conscientious teachers conscientious efforts

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