Home › Words › S › sumpahsumpah/ˈsumpa/sumpah means to promise; to earnestly swear that something is true.Among words judged in Lexicurio's Arena, sumpah ranks #16,730 of 42,747 for Qualifying.sumpah is pronounced /ˈsumpa/.EtymologyUnadapted borrowing from Malay sumpah (“to swear, to make a promise”).verbTo promise; to earnestly swear that something is true.e.g.“I don’t know anything about this scandal — sumpah.”Definitions & examples from Wiktionary (CC BY-SA 3.0).