Barron’s TOEFL Lesson 12 Vocabulary – 18 Key Terms with Definitions & Korean Translations – 2026

This focused vocabulary guide contains 18 essential academic words from Lesson 12 of the Barron’s TOEFL iBT Preparation Book, one of the most widely recognized resources for TOEFL preparation. The document presents each term with its part of speech, definition in English, and Korean translation, where applicable—making it especially useful for Korean-speaking students preparing for the TOEFL exam. Included vocabulary terms such as benefit, broaden, burgeon, endorse, erode, evaporate, noteworthy, susceptible, and others are commonly tested in the Reading and Listening sections of the TOEFL. These words were selected for their high frequency in academic contexts and are explained in simple, direct English. This document is ideal for: Students preparing for the TOEFL iBT exam ESL learners, particularly Korean speakers Learners working on academic English fluency Teachers providing targeted vocabulary practice Each term is clearly presented in a Q&A format, allowing for easy self-testing and memorization. The selection and formatting are aligned with the TOEFL iBT vocabulary-building strategies recommended by Barron’s. Keywords: TOEFL vocabulary, Barron’s Lesson 12, academic English, ESL, Korean translation, TOEFL iBT, Q&A vocabulary, English definitions, English-Korean, test prep, Reading section, Listening section, broaden, burgeon, susceptible, endorse, erode, evaporate, benefit