UNPREJUDICED
unprejudiced, impartial
(adjective) free from undue bias or preconceived opinions; “an unprejudiced appraisal of the pros and cons”; “the impartial eye of a scientist”
Source: WordNet® 3.1
Etymology
Adjective
unprejudiced (comparative more unprejudiced, superlative most unprejudiced)
Not prejudiced.
Source: Wiktionary
Un*prej"u*diced, a.
1. Not prejudiced; free from undue bias or prepossession; not
preoccupied by opinion; impartial; as, an unprejudiced mind; an
unprejudiced judge.
2. Not warped or biased by prejudice; as, an unprejudiced judgment.
– Un*prej"u*diced*ness, n. V. Knox.
Source: Webster’s Unabridged Dictionary 1913 Edition