Antonyms of noun carelessness

1 of 2 senses of carelessness

Sense 1
carelessness, sloppiness -- (the quality of not being careful or taking pains)
       Antonym of carefulness (Sense 2)
      => carefulness -- (the quality of being careful and painstaking; "I admired the carefulness of his work")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun carelessness

2 senses of carelessness

Sense 1
carelessness, sloppiness -- (the quality of not being careful or taking pains)
       => inattentiveness -- (the trait of not being considerate and thoughtful of others)

Sense 2
negligence, carelessness, neglect, nonperformance -- (failure to act with the prudence that a reasonable person would exercise under the same circumstances)
       => nonaccomplishment, nonachievement -- (an act that does not achieve its intended goal)