Vocabulary Booster: The ultimate guide to boost vocabulary. Features: 1600+ most words with meanings targeted for SAT, GRE, GMAT, CAT, TOEFL, ILETS exam prep. Displays lexical categories: Noun / Adjective / Verb / Adverb / Preposition / Conjunction / Interjection. Hear the words with meanings. For Text-To-Speech, TTS Engine need to be installed on your handset.