The two tribes, however, had been dependents in their prosperity, so they shared that same adversity on equal terms during their decline. The etymological origin of the name Fosi is not known with certainty. The name may derive from the proto-Germanic *fuhsaz, signifying "fox".
The two tribes, despite their prosperity, were dependent and shared the same hardships as they declined in power. The etymology of the name Fosi remains uncertain, possibly stemming from the proto-Germanic word *fuhsaz, meaning "fox".