Disinterested

[Sarah]

Not influenced by regard to personal interest or advantage;free from selfish motive; having no relation of interest or feeling;not biased or prejudiced; as, a disinterested decision or judge.The happiness of disinterested sacrifices. Channing.

[Sarah]

Unprejudiced. Often misused to mean uninterested.

[Hina Muqadas]

having no personal involvement or receiving no personal advantage, and therefore free to act fairly: