English

Cambridge University Press, online Cambridge dictionaries

Access this comprehensive online dictionary of the English language. Simply enter words for a detailed definition.

The Oxford English Dictionary, produced by the Oxford University Press.

American and French Research on the Treasury of the French Language Project - 1913 Webster's Revised Unabridged Dictionary. Simple Headword Search Script: 109,562 entries.

GoEnglish.com Idiom Dictionary teaches the meaning of English idioms and phrases.

Find rhymes online with the WriteExpress Rhyming Dictionary for poetry, and songwriting!

The complete Merriam-Webster Collegiate Dictionary and Thesaurus online -- free and searchable with definitions and audio pronunications. You can also read the Word of the Day, play Word Games, and purchase books and CDs.

Hutchinson Dictionary of English Usage can explain the difference and guide your choice, so search the 1600 entries to find the precise word to convey your meaning.

Free online dictionary definitions and directory of 140,000 words with only static pages for easy linking.

Dictionary Search gives you access to more than 125,000 entries.

Project to collect and distribute the most obscure and rare words in the English language.

Instances of words and word uses that appear to be new in the language.

A glossary of English grammar terms

Search for a word or term in an online Internet dictionary or glossary. Free search access to a frequently updated database of words, terms, names, acronyms vs Internet links to online dictionaries and glossaries.

A dictionary that enables the user to lookup multiple words at once and receive a personalized definition list.

A great many London slang terms.

Free online web Dictionary and Thesaurus linking reference tool. Transforms any webpage into easy convenient links to definition and word lookups in Dictionaries or Thesauruses.

Obscure, abstruse and/or recondite word, especially one not falling into the following categories: medical terms, foreign monetary units, foreign units of measure, legal terms, or professional jargon of any type.

The dictionary for words that wouldn't make it into dictionaries.

Contains 50,000 headwords, and very precisely defined and hyperlinked synonyms.