Synonyms|715Antonyms|169|Broader|6Narrower|14Related|1.2k
3
unprincipled
2
unconscionable
2
apathetic
2
casual
2
inattentive
2
inexact(adjective, indifferent, undemanding)
2
lax
2
slack
2
slipshod
2
sloppy
2
untrustworthy
2
vulgar(adjective, indifferent, undemanding)
1
complacent
1
cursory
1
cutthroat
1
derelict
1
disinterested
1
heedless
1
impetuous
1
intentionally untrue
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APASmart Define. (2015). conscientious thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/conscientious/thesaurus/antonyms
ChicagoSmart Define. 2015. "conscientious thesaurus" https://smartdefine.org/conscientious/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, conscientious thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/conscientious/thesaurus/antonyms>.
MLASmart Define. "conscientious thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/conscientious/thesaurus/antonyms>