'another' originates from Old English, specifically the word 'an ōðer', where 'an' meant 'one' and 'ōðer' meant 'other'.

'an ōðer' transformed into the Middle English word 'an other', and eventually became the modern English word 'another'.

Initially, it meant 'one other', but over time it evolved into its current meaning of 'an additional or different one'.