Where does “Maitum” come from?

Maitum (Cebuano) comes from Latin itum, from Proto-Malayo-Polynesian qitəm — black.

Ancestry of “Maitum”, step by step

Step	Language	Word	Meaning
1	Latin	itum	perfect passive participle of eō; accusative...
2	Proto-Malayo-Polynesian	qitəm	black