From Wiktionary, the free dictionary
Compare 스꾸마 (-seukkuma), 습꾸마 (-seupkkuma), which are also common Yukjin dialect forms.
으꾸마 • (-eukkuma)
- (Yukjin, Russia, Yukjin speakers in Yanbian) the declarative suffix in the 하십시오체 (hasipsioche, “formal polite”) speech level.
- Synonyms: (standard Korean) 습니다 (-seumnida), (Hamgyong Korean) 슴다 (-seumda)
2015 February 20, 장 율리아 [jang yullia], “제사 때 찾아오는 영혼 [jesa ttae chajaoneun yeonghon]”, in 한국구비문학대계 [han'gukgubimunhakdaegye][1], 우즈베키스탄 누쿠스 [ujeubekiseutan nukuseu]:쌈을 하므 절을 그거 아이 받아들인다고서리 그전에 우리 아부지랑 말했으꾸마.- Ssam-eul ha-meu jeor-eul geugeo ai badadeurin-dago-seori geujeone uri abujirang malhaesseukkuma.
- Our father said, "if you fight, then I won't receive your bows".