Heretical (adjective)

1. Related to or going against the established beliefs or doctrines of a religion or group.
2. Contrary to the accepted or traditional ideas or beliefs.

Origin:

The word "heretical" comes from the latin word "haereticus" which means "able to choose", it refers to something that is related to or goes against the established beliefs or doctrines of a religion or group.

Examples:

1. The church considered his teachings to be heretical.
2. The scientist's ideas were considered heretical by his colleagues.
3. The teacher's methods were considered to be heretical by the school board.