disinterested

adjective2

1. •
   Having no interest or stake in the outcome, and no conflicts of interest; free of bias, impartial.

   • Sir, you have a right to that kind of respect, and are arguing for yourself. I am for supporting the principle, and am disinterested in doing it, as I have no such right. — 1791
2. •
   (nonstandard) Synonym of uninterested (“not interested; not concerned; indifferent”).

   • [I]f there be cases, vvherein the party is dis-interested, and only or primarily the glory of God is respected and advanced, it [suicide] may be lavvfull. — 1608