estimulante
/estimuˈlante/ · B2 · adj
stimulating
☕⚡ estimulante = stimulate + ante, the thing that stimulates, so stimulating
Estimulante comes from Latin stimulare, to goad or prod, and it looks almost like English stimulate. The ending -ante works like English -ing or -ant: a thing that does the action. So coffee can be un estimulante, a stimulant.