heedlessness
Noun
Meaning
the trait of acting rashly and without prudence
the trait of forgetting or ignoring your responsibilities
a lack of attentiveness (as to children or helpless people)
Source: WordNetSynonyms
inadvertence
rashness
mindlessness
inattentiveness
inadvertency
unmindfulness
laxness
neglect
ignorance
oversight
detachment
negligence
indifference
disregard
amnesia
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Antonyms
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Phrases with the word
Examples
The beginning of evil is heedlessness.