The adjective that means “exhibited or characterized by an unreasoned judgment” is biased (“a biased news story”). There is an adjective bias, but it means “diagonal” and is used only of …

A biased collection of data contains more information that supports a particular opinion than you would expect to find if the collection had been made by chance:

While biased can just mean having a preference for one thing over another, it also is synonymous with "prejudiced," and that prejudice can be taken to the extreme.

Define biased. biased synonyms, biased pronunciation, biased translation, English dictionary definition of biased. also bi·assed adj. Marked by or exhibiting bias; prejudiced: gave a biased …

adjective having or showing bias or prejudice. They gave us a biased report on immigration trends.

If someone is biased, they prefer one group of people to another, and behave unfairly as a result. You can also say that a process or system is biased.

biased, adj. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Jul 24, 2025 · ‘Biased’ refers to having or showing an unfair preference for or against someone or something. It often implies a lack of neutrality or objectivity, especially in decisions, opinions, …

WordReference Random House Unabridged Dictionary of American English © 2025 bi•ased (bī′ əst), adj. having or showing bias or prejudice: They gave us a biased report on immigration …

In psychology and cognitive science, cognitive biases are systematic patterns of deviation from norm and/or rationality in judgment. [1][2] They are often studied in psychology, sociology and …