Methods for second language vocabulary development in the intermediate and advanced level English classroom are described. Rather than require students to memorize lists of words, the teacher should give students a better understanding of the process of vocabulary development by showing them how to refine their use of new lexical items and implant those items in long term memory. The process of learning new vocabulary involves using contextual clues to guess the meaning of a word, using a dictionary, referring back to the dictionary, asking a native speaker to explain idiomatic or unclear usages, and using the word in a situation where errors can be corrected. Through such a process, the student will gain a more refined understanding of the words covered and learn that practice and reinforcement are more important than memorization in developing and maintaining vocabulary. (RW)