To fail to do or carry out something due to oversight or carelessness.
To fail to care for or attend to something.
To omit to notice; to forbear to treat with attention or respect; to slight.
To ignore for the sake of simplifying calculations without significantly affecting accuracy.
Habitual lack of care.
The act of neglecting.
The state of being neglected.
To wear out, especially through excessive use.
To mismanage to the point of ruin.
To discuss ad nauseam.