The phrase "act impartially" is correct and usable in written English.
You can use it when discussing the importance of fairness and neutrality in decision-making or behavior.
Example: "As a judge, it is essential to act impartially to ensure a fair trial for all parties involved."
Alternatives: "remain neutral" or "be unbiased".
He had accused the judge of failing to act impartially against dangerous criminals.
And, jurists' own backgrounds will cause them to weigh evidence through a lens of bias, no matter how many times a judge instructs them to act impartially.
This history raised serious questions about Myers's ability to act impartially, which fueled a public outcry that stalled his first nomination.
Abortion is another area in which Stevens has insisted on the duty of the government to act impartially rather than favoring some groups over others for sectarian reasons.
Indeed, even if a supranational authority did act impartially, it would still, he wrote, have "to avoid all suspicion of partiality".
But he said he would have failed in his job if he "hadn't been able to demonstrate" that he could act impartially.
In the television interview, Mr. Cameron said he believed that Mr. Hunt had acted "impartially".
He said that complaints had come from both communities, implying that the French had acted impartially.
A spokesman for the commission defended the review, saying: "The Airports Commission is content that its process has been robust and that it has acted impartially throughout".
"The F.C.I.C. staff team that investigated issues related to the financial crisis, and Citi in particular, acted impartially and with the highest integrity at each step of the investigation," he wrote in an e-mail.
Cameron continued to stand firmly behind Hunt, insisting that the culture secretary acted "impartially" from the moment he took charge of handling the decision in December 2010 and that what he had said about it previously was not relevant.
