Synonyms of conscientious

conscientious

adjective

ˌkän(t)-shē-ˈen(t)-shəs 

1

as in honorable

guided by or in accordance with one's sense of right and wrong

operated on the belief that most people are conscientious, the unattended farm stand has a price list and a money drawer for customers to leave payment for their purchases

Synonyms & Similar Words

• honorable
• ethical
• moral
• honest
• scrupulous
• responsible
• principled
• good
• respectful
• worthy
• conscionable
• decent
• just
• virtuous
• dutiful
• true
• reliable
• observant
• righteous
• respected
• upright
• trustworthy
• right-minded
• straight
• reputable
• solid
• trusty
• esteemed
• overconscientious
• law-abiding
• upstanding
• tried-and-true

Antonyms & Near Antonyms

• unscrupulous
• dishonest
• unethical
• unjust
• immoral
• unprincipled
• unconscionable
• dishonorable
• evil
• bad
• wicked
• immoral
• sinful
• cutthroat
• indecent
• unreliable
• unrighteous
• untrustworthy
• corrupt
• depraved
• perverted
• dissolute
• evil-minded
• degenerate
• debased
• debauched
• villainous
• vicious
• atrocious
• low
• infamous
• mean
• vile
• base
• nefarious
• iniquitous
• reprobate

2

as in careful

taking, showing, or involving great care and effort

a counselor who serves patients by first being a conscientious listener

Synonyms & Similar Words

• careful
• meticulous
• loving
• diligent
• scrupulous
• thorough
• cautious
• painstaking
• thoughtful
• patient
• intensive
• assiduous
• fussy
• indefatigable
• vigilant
• watchful
• strict
• particular
• attentive
• mindful
• observant
• thoroughgoing
• exhaustive
• circumspect
• fastidious
• wary
• deliberate
• accurate
• zealous
• critical
• sedulous
• finicky
• persevering
• discriminating
• tireless
• precise
• tenacious
• chary
• slow
• alert
• guarded
• exacting
• demanding
• heedful
• determined
• studied
• dogged
• exact
• gingerly
• plodding
• all-out

Antonyms & Near Antonyms

• careless
• regardless
• negligent
• cursory
• inattentive
• heedless
• halfhearted
• unsafe
• incautious
• mindless
• slovenly
• neglectful
• lax
• unwary
• unguarded
• sloppy
• slipshod
• uncritical
• reckless
• imprecise
• inaccurate
• impetuous
• undiscriminating
• indifferent
• bold
• lazy
• undemanding
• apathetic
• rash
• lackadaisical
• lazyish

Synonym Chooser

How does the adjective conscientious differ from other similar words?

Some common synonyms of conscientious are honest, honorable, just, scrupulous, and upright. While all these words mean "having or showing a strict regard for what is morally right," 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

When can honest be used instead of conscientious?

Although the words honest and conscientious have much in common, honest stresses adherence to such virtues as truthfulness, candor, or fairness.

known for being honest in business dealings

When could honorable be used to replace conscientious?

The synonyms honorable and conscientious are sometimes interchangeable, but 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

Where would just be a reasonable alternative to conscientious?

The words just and conscientious can be used in similar contexts, but just stresses conscious choice and regular practice of what is right or equitable.

workers given just compensation

When is upright a more appropriate choice than conscientious?

In some situations, the words upright and conscientious are roughly equivalent. However, upright implies a strict adherence to moral principles.

a stern and upright minister

Example Sentences

Recent Examples of conscientious

Can its legions drink that much beer and still be conscientious enough to clear away the trash? — Sun Sentinel Editorial Board, Sun Sentinel, 25 June 2026

Trea Turner was conscientious enough to wait for his double-play partner, Bryson Stott, who had authored one of the finest games of his career. — Matt Gelb, New York Times, 24 June 2026

In addition to conscientious UV protection, Hall recommends that patients with aging skin prioritize hydration and skin-barrier support. — Jenny Berg, Glamour, 22 June 2026

After a two-year National Service stint as a hospital orderly (thanks to his own conscientious-objector status), Hockney landed at the Royal College of Art, in London, in the fall of 1959. — Mark Rozzo, Vanity Fair, 12 June 2026