'ambassadorially' originates from the word 'ambassadorial,' which is derived from 'ambassador,' a term that comes from the Latin word 'ambactus,' meaning 'servant.'

'ambactus' transformed into the Old French word 'ambassadeur,' and eventually became the modern English word 'ambassador' through Middle English.

Initially, it meant 'servant,' but over time it evolved into its current meaning of 'a diplomatic representative.'