1) Addicted to jargon 2) Describing beatnik talk 3) Describing jive 4) Far from formal 5) Filled with jargon 6) Hip in speech 7) Informal 8) Jargonish 9) Like fab or marv 10) Like much teen talk 11) Like street talk 12) Like the word hangry or bae 13) Loose, linguistically Found on https://www.crosswordclues.com/clue/slangy
Slang'y adjective Of or pertaining to slang; of the nature of slang; disposed to use slang. [ Written also slangey .] Found on http://www.encyclo.co.uk/webster/S/117
adjective constituting or expressed in slang or given to the use of slang; `a slangy expression`; `slangy speech` Found on https://www.encyclo.co.uk/local/20974