- Definition: Heresy refers to a belief or opinion that is profoundly at odds with what is generally accepted, especially in a religious context. It denotes a deviation from established religious teachings, particularly those that are officially condemned by a religious authority.
- Etymology and Origin: “Heresy” originates from the Greek word “hairesis,” which originally meant “choice” or “school of thought.” It later evolved to signify “a self-chosen doctrine” and was used in the early Christian church to denote unorthodox religious beliefs. The term entered English in the early 13th century, maintaining its association with religious dissent.