Illegal drugs
Opiates and illegal drugs are semantically related. In some cases you can use "Opiates" instead a noun phrase "Illegal drugs".
Opiates
Illegal drugs and opiates are semantically related. You can use "Illegal drugs" instead a noun "Opiates".
Mutual synonyms
Cite this Source
Opiates and Illegal drugs. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/illegal_drugs/opiates
Illegal drugs & Opiates. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/illegal_drugs/opiates>.
Opiates or Illegal drugs. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/illegal_drugs/opiates.
Google Ngram Viewer shows how "illegal drugs" and "opiates" have occurred on timeline