free from undue bias or preconceived opinions; "an unprejudiced appraisal of the pros and cons"; "the impartial eye of a scientist"過度の偏見、または先入観から解放される公平
例:The impartial eye of a scientist. 科学者の公平な目。
showing lack of favoritism; "the cold neutrality of an impartial judge"えこひいきをしていない至公
例:The cold neutrality of an impartial judge. 厳正な裁判官の冷静な中立の態度。