Impartial
IMP'ARTIAL, adjective [in and partial, from part, Latin pars.]
1. Not partial; not biased in favor of one party more than another; indifferent; unprejudiced; disinterested; as an impartial judge or arbitrator.
2. Not favoring one party more than another; equitable; just; as an impartial judgment or decision; an impartial opinion.