Slang
A Dictionary of Slang, Businessballs.com - Cockney Rhyming Slang, Carleton County Colloquialisms, Chinese-English Slang Translations, Insultmonger.com, London Slang, PseudoDictionary, Sayings Explained, Slang Search, SlangSite.com
An Internet Dictionary.
Online dictionary lets you search for definitions, cross-references English dictionaries based on multiple databases. Cross-references English dictionaries based on multiple databases. Downloadable software gives the ability to integrate the dictionary with your browser.
AnsMe.com Dictionary
Finds definitions, similar-sounding words, relations, words that rhyme, and translations.
AskOxford.com
For questions on English grammar, spelling, and usage; to search a dictionary of words, names or quotations; for help with writing; for crosswords and puzzles.
Bibliomania: Webster's Unabridged Dictionary
Forms version. Allows browsing headwords.
DataSegment.com: Online Dictionary
Find definitions by alphabetical browsing or word lookup. Powered by several print dictionaries.
Dictionary.com
Online English dictionary, thesaurus and reference guide. Includes word games, online translator, and word of the day feature.
Dictionary.net
Comprehensive dictionary database of word and phrase definitions from 8 different sources.
Die.net Online Dictionary
Cross-referenced definitions, spelling correction, and searches from WordNet, Webster's, and a variety of specialized sources. Supports regular expressions and the DICT protocol.
Freesearch Dictionary
A British English dictionary powered by the Cambridge University Press that contains around 150,000 words. The site offers a search feature or can be browsed by letter.
HyperDic
Based on the WordNet lexical database and thesaurus, this dictionary covers only a selection of the most frequent English words. Includes synonyms, antonyms, examples and pronunciation, and links between related words.
Macmillan English Dictionaries
Resource site for the Macmillan range of dictionaries.
Plan of an English Dictionary (1747)
Letter written by Samuel Johnson to the Earl of Chesterfield setting out his plan for an English Dictionary.
SmartDictionary.com
Supports both searching and browsing and encourages user contributions.
The American Heritage Dictionary of the English La
Online publication of the 4th edition. Featuring audio word pronunciations, illustrations.
The Beet Foundation
General purpose online English language dictionary and Thesaurus.
The English-to-American Dictionary
A humo(u)rous resource for Americans learning British/Scottish English.
The Rap Dictionary
Hip-hop slang and also contains a list of hip-hop artists and their real names.
The Wordsworth Compendium
Program containing over 516,000 English words and phrases to solve word puzzles. Useful for the search and manipulation of words in all aspects of logological activities.
Ultralingua Online Dictionary
Searchable dictionary of the English language, with standard, reverse and phonetic lookup. Also links to a range of other language resources.
vdictionary.com
Searchable English language dictionary shows results in synonym sets.
Word Sytes
Use this online dictionary to search for definitions in WordNet, Webster's and many other databases.
WordIQ Dictionary
Searchable definitions avaliable in a variety of dictionaries including Webster's, a legal dictionary, a dream dictionary, and an encyclopedia.