impartial

If you're in a contest you'd better hope the judges are impartial, that is, that they aren't biased toward one competitor over another.

When someone's partial to something they take its part. Impartial means no part has yet been taken. In most high school elections, teachers strive to create an impartial atmosphere, to keep it from appearing to be a popularity contest.

Definitions of impartial
1

adj free from undue bias or preconceived opinions

“the impartial eye of a scientist”
Synonyms:
unprejudiced
color-blind, colour-blind, nonracist
unprejudiced about race
open, receptive
ready or willing to receive favorably
Antonyms:
discriminatory, prejudiced
being biased or having a belief or attitude formed beforehand
homophobic
prejudiced against homosexual people
jaundiced
showing or affected by prejudice or envy or distaste
loaded
(of statements or questions) charged with associative significance and often meant to mislead or influence
anti-Semite, antiblack, racist
discriminatory especially on the basis of race or religion
sexist
discriminatory on the basis of sex (usually said of men's attitude toward women)
show more antonyms...

adj showing lack of favoritism

“the cold neutrality of an impartial judge”
Synonyms:
fair, just
free from favoritism or self-interest or bias or deception; conforming with established standards or rules
disinterested
unaffected by self-interest
cold-eyed, dispassionate
unaffected by strong emotion or prejudice
indifferent, unbiased, unbiassed
characterized by a lack of partiality
indifferent
marked by no especial liking or dislike or preference for one thing over another
Antonyms:
partial
showing favoritism
unfair, unjust
not fair; marked by injustice or partiality or deception
biased, colored, coloured, one-sided, slanted
favoring one person or side over another
show more antonyms...

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.