unbiased
adj.fair and not influenced by personal feelings or opinions. You use this to describe someone who treats all sides of an argument equally.
adj.showing no prejudice for or against something; impartial. Often used to describe reporting, research, or judicial decisions.
“A judge must remain unbiased during a trial.”
“The committee hired an outside consultant to provide an unbiased assessment of the company's finances.”
“To ensure the integrity of the double-blind study, researchers remained unbiased by having no prior knowledge of which participants received the placebo and which received the active treatment.”
Often follows a linking verb like 'remain', 'stay', or 'be'.
Learners often use the noun 'bias' instead of the participial adjective 'unbiased' when describing a person or viewpoint.
From un- + biased.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.