Written by the Fiveable Content Team โข Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examโขWritten by the Fiveable Content Team โข Last updated September 2025
Definition
Heresy refers to beliefs or opinions that go against established religious teachings or doctrines. It is considered a serious offense within religious communities and often leads to excommunication or persecution.
Related terms
Inquisition: An official investigation conducted by religious authorities to identify and suppress heretical beliefs.
Council of Trent: A meeting held by the Catholic Church in response to the Protestant Reformation, aimed at addressing heresies and reaffirming traditional teachings.
Galileo Galilei: An Italian scientist who was accused of heresy for supporting heliocentrism (the idea that Earth revolves around the sun) instead of geocentrism (the belief that Earth is at the center).