WordHacker is a powerful vocabulary builder for GRE/GMAT/SAT/ACT/TOEFL test takers, ESL students and teachers.WordHacker will pronounce each word with America native pronunciation, so you can practice your pronunciation.WordHacker will show you the root of each word using special color codes and provide explanations below, so you can understand the structure of its spelling quickly.WordHacker will provide image illustrations of each word.