Thai for English Speakers – Book 5: Upper-Intermediate / Advanced is the final volume of a five-book series for learners who can already read and use everyday Thai and want to work with more nuanced language. The book contains 300 multiple-choice practice questions across six chapters: advanced idioms and collocations; Buddhist and philosophical vocabulary; sophisticated grammar and pragmatics; media, literature, and professional registers; society and global-issues vocabulary; and a final cross-level mastery review. Each question includes Thai script, four answer choices, the correct answer, and a concise English explanation. This revised edition uses Thai script as the authoritative form and removes an inconsistent ad-hoc romanization system so advanced learners are not given unreliable pronunciation guidance.