The noun doctrine means a set of beliefs that are taught and accepted by a particular group.

Synonyms are axiom, principle, teaching, or tradition.

The word origins from Old French  (12th century) doctrine meaning “teaching, doctrine”, and directly from Latin doctrina meaning “a teaching, body of teaching, learning”. It comes from doctor meaning “teacher” plus -ina. In Middle English, it could be used generally for “learning, instruction, education.”

Some people accepted the doctrine of their new leaders.

My purpose in this meeting is to expose the flaws of political doctrine.

The doctrine was forced by the officers of the organization.