| A Dictionary of Slang: English slang and colloquialisms currently used in the UK. |
| Businessballs.com - Cockney Rhyming Slang: Origins, derivations and dictionary translations. Cockney rhyming slang uses substitute words, usually two, as a coded alternative for another word. |
| Carleton County Colloquialisms: Dictionary of the colloquial language of Carleton County, New Brunswick, Canada and Aroostook County, Maine, USA. Audio clips accompany each entry. |
| Chinese-English Slang Translations: Various expressions, usually colloquialisms or slang, translated for the benefit of native Chinese speakers learning English. |
| Double-Tongued Word Wrester: A growing dictionary of words from the fringes of English, including jargon, slang, and loan words. |
| Insultmonger.com: An alphabetized compendium of expressions considered offensive, vituperative, and insulting. |
| London Slang: Online word and phrase dictionary of Cockney rhyming slang. Also includes examples of film slang. |
| PseudoDictionary: Covers slang, made up words, "webspeak", colloquialisms and accepts contributions for new entries. |
| Sayings Explained: Searchable database of well-known sayings, phrases, and slang, along with definitions and origins. |
| Slang Search: Definitions of common words in English-language slang, organized by subject area. |
| SlangSite.com: A dictionary of slang, webspeak, made up words, and colloquialisms. Submissions welcome. |
| The New American Sub-Standard Politically Incorrect Dictionary: A glossary of offensive terms or terms with offensive meanings. |
| The Online Slang Dictionary: A global dictionary of English slang. |
| Urban Dictionary: U.S. slang dictionary whose submissions and various definitions are subject to votes for inclusion. |
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