Urban Dictionary - Urban Dictionary is a Web-based dictionary of slang words and phrases.
Writefull Thesaurus - A Google Docs add-on that uses AI to give you synonyms
Slang-Dictionary.org - Slang-Dictionary is a web-based database for searching through the database of slang words and learn how different words are getting different meanings in different countries of the world.
Dictionary Anywhere - Dictionary Anywhere is an open-source and easy-to-use browser extension for Mozilla Firefox and Google Chrome that allows you to check definitions easily while browsing the web.
Dictionary.com - Dictionary.com is the world’s leading digital dictionary. We provide millions of English definitions, spellings, audio pronunciations, example sentences, and word origins.
Silicon Valley Dictionary - Urban dictionary meets Silicon Valley