Possessing a strong vocabulary is vital to passing the TOEFL. But how can you learn enough vocabulary to obtain a good score? There are many different strategies that people use to grow their vocabulary. One way is to increase your knowledge of synonyms, antonyms, prefixes and suffixes. These will help you expand your English lexicon by decoding the meaning of words with which you're unfamiliar. This will greatly improve your overall English vocabulary. Do the exercises below. If you have any questions, don't hesitate to contact The Champ.