This study aims to investigate the level of Arabic Language comprehension among students of Faculty of Islamic Studies (FPI) in Universiti Kebangsaan Malaysia (UKM), Bangi, Malaysia in understanding the ten-term of Usul Fiqh. This study based on word-level of easy and complexity of 248 students regarding issues of the ten terms in the perspective of readiness in understanding the ten-term of Usul Fiqh. Apart from that, this article examined the students' academic performance in understanding the word of Usul Fiqh that related to the use of Arabic Language knowledge. The present study employed a quantitative-qualitative approach to obtain the data. The data were collected via questionnaire and interview from students of postgraduate and undergraduate of FPI, UKM. Firstly, the investigators of this article employed quantitative design to identify the level of students' readiness in understanding the ten-term of Arabic words in Usul Fiqh. Secondly, for depth study, the investigators prefer using qualitative design to explore three individual's readiness among students of FPI in understanding the ten-term of the Arabic words in Usul Fiqh. The result of the finding indicates all students required Arabic Language reading skills to comprehend the word of Usul Fiqh in learning Islamic Studies in their lesson.