'orthodoxy' originates from Greek, specifically the word 'orthodoxia,' where 'ortho-' meant 'correct' and 'doxa' meant 'opinion.'

'orthodoxia' transformed into the Late Latin word 'orthodoxia,' and eventually became the modern English word 'orthodoxy' through Old French.

Initially, it meant 'correct opinion,' but over time it evolved into its current meaning of 'accepted belief or practice.'