Where does “sanduku” come from?

sanduku (Swahili) comes from Arabic صَنْدُوق, from Ancient Greek σῠνθήκη — treaty.

sanduku (Swahili): box

Definitions

Step	Language	Word	Meaning
1	Arabic	صَنْدُوق	—
2	Ancient Greek	σῠνθήκη	treaty

sanduku — Etymology, Origin & Word History | Etymology Explorer