'unassisted' originates from the prefix 'un-' meaning 'not' and the word 'assist' from Latin 'assistere,' where 'ad-' meant 'to' and 'sistere' meant 'to stand.'

'assistere' transformed into the Old French word 'assister,' and eventually became the modern English word 'assist.' The prefix 'un-' was added to form 'unassisted.'

Initially, 'assist' meant 'to stand by or near,' but over time it evolved into its current meaning of 'to help or support.'