兴奋剂
xīng fèn jì · HSK 7
doping
💉 兴奋 (excited) + 剂 (dose/agent) = an excitement-dose, a stimulant or doping drug
剂 — knife radical 刂 + 齐 (qí)
A semantic-phonetic compound. The knife radical 刂 suggests cutting or preparing, while 齐 supplies the sound. Originally it referred to evenly cut or measured doses of medicine, which is why it now means a dose, preparation, or agent (as in medicine or cleaning agents).