'unshod' originates from Old English, specifically the word 'unscōd,' where 'un-' meant 'not' and 'scōd' meant 'shod or wearing shoes.'

'unscōd' transformed into the Middle English word 'unshod,' and eventually became the modern English word 'unshod.'

Initially, it meant 'not wearing shoes,' and this meaning has largely remained the same in modern usage.