←
Proto-Indo-European *wósHr̥- (derived)
←
Proto-Italic *uznjō (derived)
←
Sanskrit उष्ण (cognate)
→
Middle English unien (derived)
→
Spanish unión (derived)
→
Middle French oingnon (inherited)
→
Galician unión (derived)
→
Portuguese união (derived)
→
Sanskrit उष्ण (cognate)
→
Walloon agnon (derived)