From Wiktionary, the free dictionary
Univerbation of isa (“make”) + pama (“what”), likely as "what makes it such that...?"
isapama
- (interrogative) why?
- ni isapama nopodo yo? ― why did you not come?
- Clemens Voorhoeve (1982) The Makian languages and their neighbours[1], Pacific linguistics (as sapmá)
- James Collins (1982) Further Notes Towards a West Makian Vocabulary[2], Pacific linguistics (as isa pamá)