This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. Including or given to slang.

adj. Of or pertaining to slang; of the nature of slang; disposed to use slang.

Of, pertaining to, or of the nature of slang: as, a slangy expression.

Addicted to the use of slang.

adj. constituting or expressed in slang or given to the use of slang

"He at times almost verged on the slangy, which is, of course, quite correct and _de haut ton_, and he did not want to be taken for an old buffer, as were his contemporaries."

informal   

slangey   

ill-sounding    overfamiliar    tenement-house    one-paragraph    talky    grease-spotted    encomiastic    mask-like    bold-eyed    tar-like