'non-agriculturally' originates from the prefix 'non-' meaning 'not' and 'agricultural,' which comes from Latin 'agricultura,' where 'ager' meant 'field' and 'cultura' meant 'cultivation.'

'agricultura' transformed into the Old French word 'agriculture,' and eventually became the modern English word 'agricultural,' with 'non-' added to form 'non-agricultural' and subsequently 'non-agriculturally.'

Initially, it meant 'not related to the cultivation of fields,' and this meaning has largely remained the same in modern usage.