'incommensurate' originates from Latin, specifically the word 'incommensuratus,' where 'in-' meant 'not' and 'commensuratus' meant 'measured together.'

'incommensuratus' transformed into the Medieval Latin word 'incommensuratus,' and eventually became the modern English word 'incommensurate.'

Initially, it meant 'not measured together,' but over time it evolved into its current meaning of 'disproportionate.'