Where does “eixaguar” come from?

eixaguar (Old Portuguese) comes from Vulgar Latin *exaquāre, from Latin aqua, from Proto-Italic akʷā, from Proto-Indo-European h₂ekʷeh₂ — water, flowing water.

Ancestry of “eixaguar”, step by step

Step	Language	Word	Meaning
1	Vulgar Latin	*exaquāre	—
2	Latin	aqua	water
3	Proto-Italic	akʷā	water
4	Proto-Indo-European	h₂ekʷeh₂	water, flowing water

Words derived from “eixaguar”

enxagual
isagual

Every word from Proto-Indo-European h₂ekʷeh₂ →Every word from Proto-Italic akʷā →Every word from Latin aqua →