Disinterested.[usage-disinterested]

Disinterested. 意为"impartial（公正无私的）"。不要把它与uninterested混淆，后者意为"not interested in（对……不感兴趣）"。

Let a disinterested person judge our dispute. (an impartial person) This man is obviously uninterested in our dispute. (couldn't care less)