# unbiased

/ˌənˈbaɪəst/ (US) · /ʌnbˈaɪəst/ (UK) · CEFR B2 · Adjective

Source: https://englishreference.com/word/unbiased
Updated: 2026-05-06

## Definition

fair and not influenced by personal feelings or opinions. You use this to describe someone who treats all sides of an argument equally.

For teachers: showing no prejudice for or against something; impartial. Often used to describe reporting, research, or judicial decisions.

## Examples

- 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.

## Pitfalls

- Not "an unbias opinion" but "an unbiased opinion" — Learners often use the noun 'bias' instead of the participial adjective 'unbiased' when describing a person or viewpoint.

## Usage notes

- Often follows a linking verb like 'remain', 'stay', or 'be'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.