'unfarmed' originates from the prefix 'un-' meaning 'not' and the word 'farm', which comes from the Old English 'feorm', meaning 'provision, food, supplies'.

'feorm' transformed into the Middle English word 'ferme', and eventually became the modern English word 'farm'.

Initially, 'farm' meant 'provision or food', but over time it evolved into its current meaning of 'land used for agriculture'.