'euphonic' originates from Greek, specifically the word 'euphonos', where 'eu-' meant 'good' and 'phōnē' meant 'sound'.

'euphonic' developed via the noun 'euphony' (from Greek 'euphonos') and the adjectival suffix '-ic' in English, resulting in the modern form 'euphonic'.

Initially, it meant 'well-sounding' or 'having a good sound', and over time it has retained this core meaning of 'pleasant-sounding' in modern usage.