Do you have the moxie to learn a little 20s gangster slang? They were called the roaring 20s because the jazz age was a fast time when juice joints were filled. Synonyms of gangster from the Merriam-Webster Thesaurus, with definitions, antonyms, and related words. Find a better way to say it. A list of slang words for criminal, hooligan, gangster, gangsta. Find words with this meaning on The Online Slang Dictionary's slang thesaurus (urban thesaurus). Members of the Bloods gang make their hand symbol. Other terms for gun include 'gat', nine for the 9-mm handgunpuppy among Jamaicans and pump for shotgun. As a new portrait is released to mark the Duchess of Cornwall's 70th birthday, she lifts the lid 'It's like she's rebelling': By Daily Mail Reporter. She's popular in Poland!