Left person radical — two strokes, the compressed standing-side form of
人. Anchors
偏 in the human-attitude family alongside
偶 (mate/by chance),
倾 (lean),
仰 (look up),
俯 (look down),
倍 (multiple). Sets the central image: a person leaning to one side — physically askew, then by extension biased, partial, prejudiced.