Commonly Misspelled Words in English - Select a reference source and click on any word in a list to get a definition, pronunciation or translation of that word to your language. Take a quiz on spelling.

Daily Vocabulary Test - A new short three question multiple choice quiz every day to test your vocabulary knowledge.

Dave's Choice Words - Dave's Choice Words are fun, free vocabulary building exercises.

English Words from Chinese - English words which have come into the language from Chinese.

Exploring Words - Another advanced English-vocabulary program for long-distance learners of all ages, everywhere.

Grandiloquent Dictionary - A collection of 2000 words which are often omitted from dictionaries, and are in danger of being eliminated from the English language.

Heenan's Universal Dictionary - A collection of weird and wonderful words and their alternate meanings; sources, too, where available.

International House of Logorrhea - An online dictionary of obscure and unusual words and obsolete terms to help enhance vocabulary; over 15,500 English words with brief definitions.

The Phrontistery - A site for lovers of obscure and unusual words, featuring a dictionary of rare words, word lists of vocabulary on specific topics, essays and discussions on etymology, vocabulary and language usage.

Vocab Vitamins - Introduces an uncommon word or phrase each day, along with a definition. Includes archives, and a daily email service.

Vocabulary Activities for Standardized Tests - Interactive activities on word lists based on themes.

VocabularyMail.com - A free daily email broadcast of one to three words, their definitions, and explanations and examples of how to use them effectively in your speech and writing.

A Word A Day - Today's Word - Audio clip, definition, and example usage.

Word Info - An English vocabulary dictionary with free searches of words from Latin and Greek sources.