unbiassed

un·bi·ased

also un·bi·assed U0028500 (ŭn-bī′əst)adj. Without bias or prejudice; impartial. See Synonyms at fair¹.

un·bi′ased·ly adv.un·bi′ased·ness n.

Thesaurus

Adj.	1.	unbiassed - characterized by a lack of partiality; "a properly indifferent jury"; "an unbiasgoted account of her family problems"unbiased, indifferentimpartial - showing lack of favoritism; "the cold neutrality of an impartial judge"
	2.	unbiassed - without bias unbiasednonpartisan, nonpartizan - free from party affiliation or bias