'acrocephalous' originates from Greek, specifically the word 'akroképhalos,' where 'akro-' meant 'top' or 'pointed' and 'kephalē' meant 'head.'

'akroképhalos' transformed into the French word 'acrocephale,' and eventually became the modern English word 'acrocephalous.'

Initially, it meant 'having a pointed head,' and this meaning has largely remained the same in modern usage.