| A Word A Day - Today's Word: Audio clip, definition, and example usage. |
| 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: A online dictionary of obscure and unusual words and obsolete terms to help enhance vocabulary; over 15,500 English words with brief definitions. |
| MT Desk: Word lists by medical speciality including Alternative Medicine, Cardiovascular, Dermatology/Skin, and other areas of care. |
| 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. |
| Vokabeln.net: Web-based vocabulary trainer with a multilanguage interface. Features shortcuts for special characters used in ~100 languages. |
| WordGenie: An electronic vocabulary enhancement system that runs as a screen saver on your PC computer. |
Classical
