Sareh N.Mahidol University2024-02-082024-02-082023-12-21Issues in Language Studies Vol.12 No.2 (2023) , 1-17https://repository.li.mahidol.ac.th/handle/20.500.14594/95566This study investigates the structure of words in Patani Malay and Thai to determine the similarities and differences in the marker of the two languages through contrastive analysis studies. The data used in this study were collected from Patani Malay speakers who are able to speak the language well. They can tell stories or explain something with their language and still use it in daily life. The informants are students, teachers, merchants, fishermen, farmers, and retirees. This study indicates that the structure of words in Patani Malay and Thai has similarities and differences in rules. The equation includes the addition of affixes, compounding, and reduplication. The differences in the rule of the word in Patani Malay and Thai include the position of affixation, reduplication of the root and assigning an “emphatic high tone”, and semantic reduplication.Social SciencesArts and HumanitiesArticleSCOPUS10.33736/ils.5552.20232-s2.0-8518067900621802726