Heresy (noun)

A belief or opinion that goes against established religious doctrine or the teachings of a particular church.

Origin:

From the greek word "hairesis" meaning a choosing, a sect, or a choice of beliefs.

Examples:

1. He was accused of heresy for advocating for the ordination of women.
2. The belief in reincarnation is considered heresy in some religions.
3. The denial of the doctrine of the Trinity is considered heresy in Christianity.
4. The idea that the earth was not the center of the universe was considered heresy during the middle ages.
5. The belief that the Holy Spirit proceeds from the Father and the Son rather than just the Father is considered heresy in some Christian denominations.