What are some alternatives?
When comparing Urban Dictionary and Slang-Dictionary.org, you can also consider the following products
The Online Slang Dictionary - Learn thousands of real slang words or add your own.
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.
SayWhat - A fun and informative Video Urban Dictionary.
SlangSite.com - SlangSite.
Thesaurus.com - Definitions and Synonyms
Spell It Out - Spelling out tech acronyms so you can be in the know.