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.
Do you know how to upkeep a boat?
To maintain (something) or keep it in good repair.
Maintenance; the act or effort of keeping something in good and working condition.