- Cambridge International Dictionaries
 - Search Cambridge's free online dictionaries of English, English for students, French, Spanish, phrasal verbs, or idioms. - Lexicography@
- Slang
- Dictionary of Slang
- Collection of English slang and colloquialisms currently used in Britain, as well as slang links, bibliography, and related articles.
- London Slang
- Dictionary of slang usage in and around London, England, including film slang and "just heard" new terms.
- Peak English: Slang
- Search for British slang words, business idioms, and terms you might not find in a regular dictionary. From Peak English.
- Scottish Slang Productions
- Collection of Scottish slang phrases recorded in and around London by true Scots. WAV and Real Audio files available.
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