Translation guide
To have an unfair preference or prejudice that affects judgment. In Japanese, this is expressed through adjectives, verbs, and set phrases that describe favoritism, unfairness, or a tilted perspective.
Describing a person or their opinion as not neutral, often due to personal feelings or interests.
The most common and natural way to say someone or something is biased. It literally means 'is leaning/tilted' and implies unfairness.
His opinion is biased.
That article is clearly biased.
Means 'unfair' and is often used when bias leads to unequal treatment. It is a noun or na-adjective.
That decision is biased/unfair.
Specifically means favoritism, showing bias toward a particular person or group. Often used in contexts like parenting, teaching, or workplace.
The teacher is biased toward certain students.
Means 'to have a preconception' or prejudice. It emphasizes a pre-existing bias that affects judgment.
He has a bias, so he can't judge fairly.
Expressing that someone shows favoritism or leans toward a particular side.
Literally 'to hold someone's shoulder', meaning to side with or support someone, often implying bias.
He always sides with his younger brother (is biased toward him).
To favor or show partiality. Often used for customers, teams, or individuals.
That shop favors its regular customers (is biased toward them).
To have a biased view or perspective. More formal and descriptive.
Referring to bias in research, statistics, or sampling.
The English phrase 'be biased' does not have a single direct verb equivalent in Japanese. Using 偏る (katayoru) as a verb is correct, but it is often used in the te-iru form (偏っている) to describe a state. Avoid translating word-for-word as バイアスである, which sounds unnatural.
偏っている is the most general and neutral way to say 'biased'. 不公平 emphasizes unfairness. 依怙贔屓 specifically means favoritism and is often used in personal relationships. Choose based on the nuance you want to convey.
He always takes a biased view.
サンプルにバイアスがかかっている。
The sample is biased.