Visual Thesaurus
Vocabulary Tools Galore
- Cambridge Dictionaries Online
- Advanced Learners Dictionary and more
- Chat Acronyms Used in E-mail, IM, and Text Messaging
- The Free Dictionary, Encyclopedia, Thesaurus and
- many other resources
- Longman Dictionary of Contemporary English
- The Merriam-Webster Dictionary
- The Merriam-Webster Visual Dictionary Online
- Shahi: A visual dictionary
- UsingEnglish.com's:
- Dictionary of English Idioms & Idiomatic Expressions
- Dictionary of English Phrasal Verbs
- List of English Irregular Verbs
- Gives non-members access to over 200 irregular English verbs.
- Wiktionary, the free dictionary
- WordNet Search - 3.0 (Princeton University)