Find Antonyms

conscientious Antonyms

Opposite of conscientious

Because the opposite of conscientious shifts with each meaning, the 15 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Wishing to do one's work or duty well and thoroughly; characterized by extreme care and great effort.

Usage Example

"The negligent archivist double-checked every historical manuscript before cataloging it."

Strongest
negligent
careless
sloppy
Strong
remiss
lax
slipshod
slapdash
neglectful
half-hearted

• adjective (Context 2)

Governed by or conforming to the dictates of conscience; principled and ethical.

Usage Example

"As a unscrupulous objector, he requested non-combatant medical duties on moral grounds."

Strongest
unscrupulous
unprincipled
unethical
Strong
dishonest
immoral
corrupt

Similar words to conscientious

Words similar to conscientious shift depending on context. Common synonyms include:

principled
diligent
scrupulous
thorough
meticulous
ethical
upright
assiduous
See all synonyms of conscientious

• Nearby Words

conquest
conquistador
conscience
conscientious
conscientiously
conscientiousness
conscious

Cite this Entry

Wordmom. (2026). Antonyms for Conscientious. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/conscientious
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