(1):
(n.) The quality or state of being indifferent, or not making a difference; want of sufficient importance to constitute a difference; absence of weight; insignificance.
(2):
(n.) Passableness; mediocrity.
(3):
(n.) Impartiality; freedom from prejudice, prepossession, or bias.
(4):
(n.) Absence of anxiety or interest in respect to what is presented to the mind; unconcernedness; as, entire indifference to all that occurs.