1. A preconceived judgment or opinion formed without factual knowledge.
2. Irrational hostility, hatred, or suspicion of a particular group, race, or religion.
The maintenance of an adverse opinion about a person or class of persons in spite of evidence to the contrary. This is a common characteristic of the human being and is linked with the habit of arguing illogically from the particular to the general and the tendency to irrational chauvinism.