- An extensive working vocabulary is a prerequisite for test-taking success on the GRE Graduate Record Exam. This revised and updated test preparation guide presents 800 college-graduate-level words with definitions that frequently appear on the exam, while also familiarizing test takers with how the words are generally used in various contexts. Additional features include a pretest that serves as a diagnostic, a lengthy word list with extensive sentence-completion exercises, and a chapter that discusses and analyzes essential word roots. The book concludes with a detailed posttest. Answers are provided for all exercises and for all questions in the posttest.