YANORIA MARSALINA KAPITAN Pengarang FRANSISKUS BUSTAN Dosen Pembimbing 1 Soleman Dapa Taka Dosen Pembimbing 2 Drs.Soleman Dapa Taka, MA Penguji 1 Prof. Dr. Fransiskus Bustan, M.Lib Ketua Penguji Jermy Imanuel Balukh Penguji 2

This research present study to explore the characteristics of the Kosu tradition in the traditional marriage of the Amarasi society in Timor Island, which holds significant meaning in the social and cultural context of the local community. The Kosu tradition is an integral part of the Amarasi traditional wedding ceremony, serving not only as a religious ritual but also as a means to strengthen social and economic relationships between families and the community. Kosu embodies the unity and moral support between the two families, signifying their collective commitment to the success of the newlyweds' household. This study employs a qualitative descriptive method with five traditional leaders of the Amarasi society as research subjects. The author uses interviews to collect data. The results of the data analysis show that the characteristics of the Kosu tradition consist of a structure that includes songs, shawls, sticks, money, and music. The characteristics of the Kosu tradition provide economic benefits to the Amarasi society and also hold deep symbolic meaning, such as expressions of gratitude and moral support from the family and community to the newlyweds. Keywords: Amarasi,characteristics,kosu,marriage,society,tradition