Longman Web Dictionary (http://www.ldoceonline.com/) This is the dictionary that some classes use at the U of S Language Centre. It uses IPA to show the pronunciation and even has pictures.
Dictionary.com (http://dictionary.reference.com/) This site has a good dictionary and thesauruses.
Newbury House Online Dictionary (http://nhd.heinle.com/) It also uses IPA to show the pronunciation and has many example sentences.
Merriam-Webster (http://www.m-w.com) It is one of the most common collegiate dictionaries in North America. It includes the origin of the words. This is also a thesaurus.
Yahoo Dictionary Listing (http://dir.yahoo.com/Reference/Dictionaries) There are links to many, many other online dictionaries from this site.
English Word Lists - If you want to improve your vocabulary, but you don't know which words are good to learn, check out these words lists.
English Prefixes, Suffixes, Roots - Understanding basic word parts is a great way to guess the meanings of new words. Click here to download a list of the common English prefixes, suffixes, and roots (10 pages).
MicroConcord Corpus Collections - This site lets you type in a word and see a sample of sentences from textbooks or journal documents that contain that word. It's a great way to learn collocations in English.
AntWordProfiler (http://www.antlab.sci.waseda.ac.jp/antwordprofiler_index.html.) This free program lets you analyze an article to easily see which words in the article are from the 1st 1000 word list, the 2nd 1000 word list, the academic word list, and which words are not on any of the lists.
Learn Vocabulary Using Maclean's (http://homepage.usask.ca/~dul381/common/vocabexercise.html) Here is an exercise to learn vocabulary using the Maclean's magazine website and an online dictionary.
"Interesting Things" (http://www.manythings.org/it/sitemap.html) A general ESL web site with many activities to learn vocabulary.
"The Idiom Connection" (http://www.idiomconnection.com/) This is a great site for learning all sorts of great idioms in English.
