Level-up your TOEFL score with these great vocabulary flashcards from Pfeifer Learning. Mastering TOEFL Vocabulary is a complete system for improving both receptive and productive vocabulary knowledge based on the scientifically proven New Academic Word List. Check back soon for more modules including example sentence flashcards, key grammar structure worksheets, and lexicon categorization tools. Don't let vocabulary hold you back from greatness. Get started today with Mastering TOEFL Vocabulary: Definition Flashcards 1-10.