'expansive' originates from Latin, specifically the word 'expansivus,' where 'expandere' meant 'to spread out.'

'expansivus' transformed into the French word 'expansif,' and eventually became the modern English word 'expansive' through Middle English.

Initially, it meant 'to spread out or extend,' but over time it evolved into its current meanings of 'covering a wide area' and 'open and communicative.'