The state of being indifferent.
Unconcerned nonchalance.
Unbiased impartiality.
Unemotional apathy.
Self-identity defined through the negation of difference, non-difference.
A lack of enthusiasm.
The state of being neglected.
Habitual lack of care.
The act of neglecting.
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.