'Effie' originates from Greek, specifically the word 'Euphemia', where 'eu-' meant 'good' and 'pheme' meant 'speech' or 'reputation'.

'Effie' developed as a diminutive/pet form of the Greek name 'Euphemia' through medieval and later English/Scottish usage and eventually became the modern English given name 'Effie'.

Initially associated with the Greek name meaning 'well-spoken' or 'of good repute' (from 'Euphemia'), it evolved into a short, affectionate form used as an independent given name, 'Effie'.