What does "indifference" mean?

Additional senses

1. 2.Impartiality; freedom from prejudice, prepossession, or bias. He . . . is far from such indifference and equity as ought and must be in judges which he saith I assign. Sir T. More.
2. 3.Absence of anxiety or interest in respect to what is presented to the mind; unconcernedness; as, entire indifference to all that occurs. Indifference can not but be criminal, when it is conversant about objects which are so far from being of an indifferent nature, that they are highest importance. Addison.