'adjust' originates from Old French, specifically the word 'ajuster,' where 'a-' meant 'to' and 'juster' meant 'to bring into line.'

'ajuster' transformed into the Middle English word 'ajusten,' and eventually became the modern English word 'adjust.'

Initially, it meant 'to bring into line,' but over time it evolved into its current meaning of 'to change slightly to make suitable.'