We don't have synonyms for street drugs yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are street drug.
(n) :
(slang) A drug used illegally and recreationally for its euphoric and other mind-altering effects, such as opiates, cannabinoids, benzodiazepines, amphetamines and others.
(n) :
(slang) A drug used illegally and recreationally for its euphoric and other mind-altering effects, such as opiates, cannabinoids, benzodiazepines, amphetamines and others.