'allomorphic' originates from the Greek word 'allomorphos,' where 'allo-' meant 'other' and 'morphē' meant 'form.'

'allomorphos' transformed into the English word 'allomorph,' and eventually became the modern English word 'allomorphic.'

Initially, it meant 'other form,' but over time it evolved into its current meaning of 'relating to variant forms of a morpheme.'