The most effective way to improve vocabulary for the TOEFL exam is through consistent reading, active learning, and practical usage. Reading English newspapers, academic articles, and online journals exposes you to high-level words in context, which helps you understand how they’re naturally used. Keeping a personal vocabulary journal is also helpful — note down new words, their meanings, synonyms, and example sentences. To retain new words better, use them in your daily writing or speaking practice, as applying them strengthens memory. Flashcard apps like Anki, Quizlet, or Magoosh Vocabulary Builder are great for spaced repetition, a technique that helps you review words just before you’re likely to forget them. Learning word roots, prefixes, and suffixes also makes it easier to guess meanings of unfamiliar words during the test. Finally, revising regularly and testing yourself through quizzes ensures that you not only remember new vocabulary but also use it accurately and confidently in the TOEFL exam.