(Hwanghae, some areas of Northwestern Seoul)Dialectal form of 었(-eot-, “past tense marker going onto the main verb, adjective or copula of the sentence”).
2021 June 15, 이철은 [icheoreun], “We Interviewed A Former Elite North Korean Spy”, in Asian Boss[1], 황해남도 연안군 [hwanghaenamdo yeonan'gun]:
1981 July 17, 신석하 [sinseokha], “벌떼총 이야기(양촌원 죽은 말 지키듯) [beolttechong iyagi(yangchonwon jugeun mal jikideut)]”, in 한국구비문학대계 [han'gukgubimunhakdaegye][2], 인천광역시 강화군 화도면 [incheon'gwang'yeoksi ganghwagun hwadomyeon]: