Find Antonyms

careless Antonyms

Opposite of careless

Because the opposite of careless 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)

Not giving sufficient attention or thought to avoiding harm, errors, or mistakes.

Usage Example

"A single careful mistake in the accounting spreadsheet delayed the financial audit by two days."

Strongest
careful
cautious
attentive
meticulous
Strong
vigilant
conscientious
prudent
thorough
mindful
diligent

• adjective (Context 2)

Showing no interest or effort; casual, effortless, or unstudied.

Usage Example

"He tossed his coat over the chair with a studied shrug and walked into the kitchen."

Strongest
studied
deliberate
Strong
concerned
anxious
calculated

Similar words to careless

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

negligent
inattentive
casual
heedless
nonchalant
sloppy
offhand
unconcerned
See all synonyms of careless

• Nearby Words

carefulness
caregiver
caregiving
careless
carelessly
carelessness
carer

Cite this Entry

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