3 words match “impartial”

• impartial adjective

  treating all sides equally; not favoring anyone

  A good referee stays impartial, whichever team is winning.

  Like fair, neutral, unbiased

• disinterested adjective

  not influenced by personal gain; fair and neutral

  A disinterested judge chose the winner of the science fair.

  Like impartial, neutral, unbiased

• dispassionate adjective

  calm, fair, and not influenced by strong feelings

  A scientist should give a dispassionate account of the results.

  Like impartial, objective, detached