'south-facing' originates from the combination of 'south,' meaning the direction opposite to north, and 'facing,' meaning oriented towards.

'south-facing' evolved from the Old English word 'sūþ' for 'south' and the Middle English 'facing,' eventually forming the modern English term 'south-facing.'

Initially, it meant 'oriented towards the south,' and this meaning has largely remained the same in modern usage.