the.com/orthodoxy

means The set of beliefs or practices officially accepted as correct within a group, especially one that punishes deviation from it.

from From Greek 'orthodoxos' — 'orthos' meaning straight or right, plus 'doxa' meaning opinion or belief (the same root that gives us 'doctrine' and 'dogma'). So literally 'right opinion.' The word entered English largely through early Christian theological disputes, where it marked the line between sanctioned belief and heresy — orthodoxy was less about truth itself than about who got to declare what counted as it.