Where does “adquassiare” come from?

adquassiare (Vulgar Latin) comes from Latin quassus, from Latin quatio, from Proto-Indo-European kʷeh₁t- — to shake.

Ancestry of “adquassiare”, step by step

Step	Language	Word	Meaning
1	Latin	quassus	The act of shaking
2	Latin	quatio	I shake; agitate; I wield, brandish; I move,...
3	Proto-Indo-European	kʷeh₁t-	to shake

adquassiare — Etymology, Origin & Word History | Etymology Explorer