As you may have noticed, above you will find words for "1-methyl-4-phenyl-4-propionoxypiperidine, an opioid analgesic drug developed in the 1940s, an analogue of meperidine, sometimes used recreationally.". Hover the mouse over the word you'd like to know more about to view its definition. Click to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.