unbiased

American  

[uhn-bahy-uhst] / ʌnˈbaɪ əst /

especially British, unbiassed

adjective

1. not biased biased or prejudiced; fair; impartial.

   Synonyms:

   neutral, tolerant, equitable, fair

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unbiased British  

/ ʌnˈbaɪəst /

adjective

1. having no bias or prejudice; fair or impartial

2. statistics

   1. (of a sample) not affected by any extraneous factors, conflated variables, or selectivity which influence its distribution; random

   2. (of an estimator) having an expected value equal to the parameter being estimated; having zero bias

   3. Also called: discriminatory.  (of a significance test). Having a power greater than the predetermined significance level

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Other Word Forms

• unbiasedly adverb
• unbiasedness noun

Etymology

Origin of unbiased

First recorded in 1600–10; un- ¹ + biased

Example Sentences

The women who come to Herbst’s group are looking for unbiased advice — real answers from people who are not selling anything.

From MarketWatch • Mar. 21, 2026

“It was and is my judgment that these facts would not cause a reasonable and unbiased person to doubt my ability to decide the matters in question impartially,” Alito wrote.

From Slate • Mar. 17, 2026

To ensure accurate and unbiased results, we conduct our speed and streaming tests in various locations, starting in Canada itself, before expanding to the U.S. and other regions.

From Salon • Mar. 11, 2026

“The promise of prediction markets is to harness the wisdom of the crowd to create accurate, unbiased forecasts for the most important events to society,” Polymarket said in a note on its site.

From The Wall Street Journal • Mar. 1, 2026

Your sister substantiates this failing for as her letter progresses her judgment gives way to temper—her thoughts are good, lucid the products of intelligence, but it is not now an unbiased, impersonal intelligence.

From "In Cold Blood" by Truman Capote

Related Words

• disinterested
• dispassionate
• equitable
• honest
• impartial
• neutral
• nonpartisan
• open-minded