Unconcerned nonchalance.
The state of being indifferent.
Unbiased impartiality.
Unemotional apathy.
Self-identity defined through the negation of difference, non-difference.
A lack of enthusiasm.
The fervour or tireless devotion for a person, cause, or ideal and determination in its furtherance; diligent enthusiasm; powerful interest.
The collective noun for a group of zebras.