'euphemistically' originates from Greek, specifically the word 'euphēmismos,' where 'eu-' meant 'good' and 'phēmē' meant 'speech.'

'euphēmismos' transformed into the Late Latin word 'euphemismus,' and eventually became the modern English word 'euphemism' through Middle English.

Initially, it meant 'good speech,' but over time it evolved into its current meaning of 'using mild or indirect expressions.'