A dogma is a belief or principle established and accepted as true and unquestionable within a system of thought, a religion, or an ideology.
It is an assertion considered irrefutable and expected to be accepted without doubts or objections. Dogmas are often fundamental to the identity and practice of a particular doctrine or community and are transmitted from generation to generation.
Often, dogmas have a normative character and can influence how people think, behave, and make decisions within that specific context.