When a new mother intentionally fails to take care of her newborn baby, this is an example of dereliction.
The new soldier did not clean his cabin and was scolded for dereliction and disobedience.
What he did was a terrible dereliction of duty.
The principle does not apply to the cost of tackling dereliction.
This will reduce the demand for new buildings in the countryside, provide jobs and help avoid rural dereliction.