Juno

The story

1. Proto-Indo-European · derived from*h₂yúh₃onh₂-“the young goddess”
2. Proto-Indo-European · derived from*dyúh₃onh₂-“she of heavenly authority”
3. Latin · derived fromIūnō
4. Middle English · inherited fromJuno
5. English todayJuno

From Middle English Juno, from Latin Iūnō of uncertain origin. One hypothesis is derivation from Proto-Indo-European *dyúh₃onh₂- (“she of heavenly authority”), from *dyew- (“sky, heaven”) + *-Hō (“burden, authority”), reflecting her role as goddess of rulers. Another is derivation from Proto-Indo-European *h₂yúh₃onh₂- (“the young goddess”), from *h₂eyu- (“long time, lifetime”) + *-Hō (“burden, authority”), making it cognate with Latin iuvenis (“young”). Both would have produced the unattested early Latin form *Iuvō, declined with the root Iūn- and eventually normalized to Iūnō.