General Dictionaries and Thesauri
- Dictionary.comFree internet dictionary
- Oxford English Dictionary This link opens in a new windowMeaning, history, and usage of words and phrases from across the English-speaking world.
- IMTranslator DictionaryOffers millions of professional translations of words, phrases, idioms, expressions and sentences ranging from colloquial and informal to technical and subject-oriented terminology. Enhanced with voice capability, machine translation, advanced all-dictionaries search and much more.
Illustrated Dictionaries
- Internet Picture DictionaryThe Internet Picture Dictionary is a completely free, online multilingual picture dictionary designed especially for ESL students and beginning English, French, German, Spanish and Italian language learners of all ages.
Dictionaries of Idioms, Cliches, and Jargon
- ESL Idioms and SlangIdiom and slang links of interest to teachers and students of English as a Second Language.