Unemotional apathy.
Unconcerned nonchalance.
The state of being indifferent.
Unbiased impartiality.
Self-identity defined through the negation of difference, non-difference.
A lack of enthusiasm.
A state of extreme torpor or apathy, especially with lack of emotion, energy or enthusiasm; (loosely) sluggishness, laziness.
A condition characterized by extreme fatigue or drowsiness, deep unresponsiveness, or prolonged sleep patterns.