Impartial in Malayalam

Malayalam words whose English meaning includes “impartial”:

പൊന്തി (ponthi) — Club, stout rod, wooden sword, impartial observer, arbitrator.
മദ്ധ്യസ്ഥന്‍ (maddhyasthan) — Mediator, neutral or impartial man, middleman, arbitrator, an intermediary, Siva.