Where does “espesso” come from?

espesso (Old Portuguese) comes from Latin spissus, from Proto-Indo-European spidtos.

Ancestry of “espesso”, step by step

Step	Language	Word	Meaning
1	Latin	spissus	thick, close, compact, dense, crowded; slow,...
2	Proto-Indo-European	spidtos	—

espesso — Etymology, Origin & Word History | Etymology Explorer