As nouns the difference between dereliction and carelessness
is that dereliction
is willful neglect of one's duty while carelessness
is lack of care.
willful neglect of one's duty
- The new soldier did not clean his cabin and was scolded for dereliction and disobedience.
the act of abandoning something, or the state of being abandoned
- What he did was a terrible dereliction of duty.
Lack of care.
- This accident was caused by carelessness .