Where does “Stoicus” come from?

Stoicus (Latin) comes from Ancient Greek Στωϊκός, from Ancient Greek Ποικίλη Στοά — painted portico.

Ancestry of “Stoicus”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	Στωϊκός	—
2	Ancient Greek	Ποικίλη Στοά	painted portico

Stoicus — Etymology, Origin & Word History | Etymology Explorer