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OpenJurist

Nemo potest esse simul actor et judex

Defined in 2 dictionaries — Ballentine's (1916), Black's (1910)

Ballentine's Law Dictionary

James A. Ballentine · 1916

No one can at the same time be both plaintiff and judge.

Black's Law Dictionary

Henry Campbell Black, M.A. · 1910

No one can be at once suitor and judge. Broom, Max. 117.