Merriam-Webster's Vocabulary Builder, Kindle Edition

This expanded and thoroughly revised new edition is designed not only to add hundreds of useful new words to a student's permanent working vocabulary but also to teach the most common and useful Greek and Latin word-building roots to help students understand and master additional vocabulary in the future.

Example sentences and brief explanatory comments provide a rich context to bring the words to life, and quizzes are provided to encourage reuse and recall of words and to reinforce memory of them. All of these features combine to make this a valuable tool for students preparing for standardized tests or simply seeking to expand their English vocabulary.