not supporting one person or group more than another synonym neutral, unbiased an impartial inquiry/observer to give impartial advice As chairman, I must remain impartial. opposite partialExtra examples Public broadcasting is supposed to be strictly impartial during an election campaign. Teenagers need access to confidential and impartial advice. The jury must be objective and impartial at all times. To the impartial observer, the town might seem a little dull.