Nirna Nirmala Dosen Pembimbing 1 Isnaniah Penguji 1 Tenia Ramalia Penguji 1 Marrieta Modies Swara Dosen Pembimbing 2 Mufarika Pengarang khusaeni Ketua Penguji

Enhancing motivation is essential for students in acquiring English vocabulary. The higher motivation the students gain, the bigger success they achieve in mastering vocabulary. However, the majority of students in senior high schools are less motivated to increase their vocabulary, particularly when it comes to memorization. Therefore, the teachers must find the right media that will increase student motivation. Certain applications for vocabulary study can be accessed via a smartphone. The goal of the research is to investigate into the usefulness of using the Quizlet application as a tool to enhance the motivation of learners to learn vocabulary. This type of research is Quasi-Experimental with quantitative methods. The researcher used multiple choice tests and questionnaire. The participants were 72 students who were divided into the experimental and the control groups. In processing the data, the independent samples t-tests was used to collect the data. The findings indicate that using the Quizlet Application to enhance students' motivation in learning vocabulary is helpful. Students were more enthusiastic, did not get bored fast, and as a result shown a high level of interest when learning vocabulary with Quizlet