English writing, particularly essay writing, is one of the most challenging skills for English as a Foreign Language (EFL) learners. Producing cohesive and coherent texts has become increasingly important. This study focuses on the role of synonymy as a lexical cohesive device in the essay writing of EFL students, specifically examining how frequently Albanian university students use synonyms in their essays. Additionally, the study explores how synonymy contributes to creating a well-structured and cohesive essay. Fifty-six first-year students (male and female) from the Faculty of Foreign Languages, English Department, were purposefully selected to write 56 descriptive essays. A qualitative research design was employed, with writing tasks serving as the primary data collection instrument. The data was analysed using qualitative content analysis procedures. The findings showed that synonyms were used more frequently than near-synonyms in the students' essays. It was also found that the students used various synonyms and near-synonyms to achieve logical cohesion in their writing, despite having limited knowledge of synonymy as a lexical cohesive device. Furthermore, the students had difficulty selecting the appropriate synonyms due to their insufficient vocabulary.