Where does “insolato” come from?

insolato (Italian) comes from Latin insulatus, from Latin insulare, from Latin Īnsula, from Proto-Italic enselā.

Ancestry of “insolato”, step by step

Step	Language	Word	Meaning
1	Latin	insulatus	made into an island
2	Latin	insulare	present active infinitive of īnsulō;...
3	Latin	Īnsula	—
4	Proto-Italic	enselā	—

insolato — Etymology, Origin & Word History | Etymology Explorer