This Italian slang dictionary started as an ebook offered at Dreaming In Italian. I decided to open up the contents and make them available to everyone for free. If you have any questions or suggestions, feel free to email me at admin AT italian-slang-dictionary DOT com. Grazie and I hope you enjoy italian-slang-dictionary.com!
UPDATE: I started a new Italian-themed website, How To Say In Italian. Postings there will be about more general Italian words and phrases, and the slang and profanity will be kept here. I’ll try to cross-reference them when the overlap. Enjoy!
2nd UPDATE: And of all the Italian slang words on this site, you can find my top 10 favorite Italian slang words & phrases here on my Squidoo page.