uninterested
  (a.)無利害關係的,無關係的,公平的
  Un·in·ter·est·ed a.
  1. Not interested; not having any interest or property in; having nothing at stake; as, to be uninterested in any business.
  2. Not having the mind or the passions engaged; as, uninterested in a discourse or narration.
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  uninterested
       adj 1: not having or showing interest; "an uninterested spectator"
              [ant: interested]
       2: having no care or interest in knowing; "she appeared totally
          uninterested"