'One of a kind, an only child' (mono-, 'only,' + genos, 'kind/kin') — NOT 'only-begotten,' which came through the Latin unigenitus and reads a later doctrine into the word. Rendered here 'the only Son.' ⚠ Collected at its most famous occurrence in John 3:16, where the familiar 'his only begotten Son' has BOTH problems at once: 'begotten' is the Latin unigenitus, and the possessive 'his' stands only in the later manuscripts — the earliest text reads simply 'the Son.' → first discussed at John 1:14