'Faun' originates from Latin, specifically the word 'faunus,' where 'faunus' referred to a rural deity associated with forests and fields.

'Faunus' transformed into the Old French word 'faun,' and eventually became the modern English word 'faun' through Middle English.

Initially, it referred to a rural deity, but over time it evolved into its current meaning of a mythological creature with goat-like features.